2018 MERCEDES-BENZ SL CLASS engine

G WARNING
During the charging process ,ab attery produces hydrogen gas. If as hort circui to ccurs or sparks
are created ,t he hydrogen gas can ignite. There is ar isk of an explosion.R
Make sure that the positive terminal of ac onnected battery does not come into contact with
vehicl ep arts.R
Never place metal objects or tools on ab attery.R
It is important that you observe the described order of the battery terminal sw hen connecting
and disconnecting ab attery.R
When jump-starting, make sure that the battery pole sw ith identical polarity are connected.R
It is particularl yi mportant to observe the described order when connecting and disconnecting
the jumper cables. R
Never connect or disconnect the battery terminal sw hile the engine is running.
G WARNING
Ad ischarged battery can freeze at temperatures below freezing point. When jump-starting the
vehicl eorc harging the battery ,g ase sc an escap ef rom the battery .T here is ar isk of an explosion.
Allow the frozen battery to thaw out before charging it or jump-starting.
! Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter coul db e
damaged by the non-combusted fuel.
If the indicator/warning lamp sdon ot light up at low temperatures, it is very likel yt hat the dis-
charge db attery has frozen. In this case, you may neither charge the battery nor jump-start the
vehicle. The service life of at hawed-out battery may be shorter. The starting characteristics can be
impaired ,p articularl yatl ow temperatures. Have the thawed-out battery checked at aq ualified
specialist workshop.
Do not start the vehicl eu sing ar api dc harging device. If you rv ehicle's battery is discharged, the
engine can be jump-started from another vehicl eorf rom as econd battery using jumper cables.
Observe the following points: R
The battery is not accessible in all vehicles. If the other vehicle's battery is not accessible ,j ump-
start the vehicl eu sing as econd battery or aj ump-starting device.R
You may only jump-start the vehicl ew hen the engine and exhaust system are cold.R
Do not start the engine if the battery is frozen. Let the battery thaw first. R
Only jump-start from batterie sw ith a12Vv oltag er ating.R
Only use jumper cables which have as ufficient cross-section and insulated terminal clamps.R
If the battery is full yd ischarged, leave the battery that is being used to jump-start connected for
af ew minutes before attempting to start. This charge st he battery slightly.R
Make sure that the two vehicles do not touch.
Make sure that: R
The jumper cables are not damaged. R
Bare parts of the terminal clamp do not come into contact with other metal parts while the jumper
cables are connected to the ba ttery.R
The jumper cables cannot come into contact with parts which can move when the engine is
running, such as the V-belt pulley or the fan. X
Secure the vehicl ebya pplying the electric parking brake.X
Shift the transmission to position ] .254
Jump-starting
Breakdown assistance

An arrow on the sidewall of the tire indicates its
correct direction of rotation.
Storin gw heelsStore wheels tha ta re not being used in ac ool,
dry and preferably dark place .P rotect the tires
from oil, grease, gasoline and diesel.
Mounting aw heel
Preparin gt he vehicleX
Stop the vehicl eons olid ,n on-slippery and
level ground. X
Apply the electri cp ar king brake manually.X
Bring the front wheels into the straight-ahead
position. X
Shift the transmission to position ] .X
Switch off the engine. X
Vehicles withou tK EYLESS -GO: remove the
SmartKe yf rom the ignition lock.X
Vehicles with KEYLESS-GO: open the driv-
er' sd oo r.
The vehicl ee le ctronics now have status 0 .
Thi sist he same as the SmartKe yh av ing been
removed. X
Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
( Y
page 116). X
If included in the vehicl ee quipment ,r emove
the tire-change tool kit from the vehicle. X
Safeguar dt he vehicl ea gain st rolling away.
i Due to difference sinv ehicl ee quipment ,n ot
al lv ehicles ar ee quippe dw it hat ire-change
tool kit. For informatio nonw hi ch tool sa re
required to perfor maw heel change on your
vehicle, consult an authorize dM ercedes-
Benz Center.
Necessary tire-changing tool sc an include, for
example: R
Jack R
Wheel chock R
Lu gw rench Securin gt he vehicle to preven titf rom
rolling away
If your vehicl eise quippe dw it haw heel chock, it
can be found in the tire-change tool kit
( Y
page 245).
The folding whee lc hoc ki sana ddit ional safety
measure to prevent the vehicl ef rom rolling
away ,f or exampl ew he nc hanging aw heel .X
Fol db ot hp la te su pwar ds C .X
Fol do ut lowe rp la te D .X
Guid et he lugs on the lowe rp la te full yi nto the
openings in base plate

must be positioned vertically, directly under
the jacking point of the vehicle.
! Only position the jack at the appropriate
jacking point of the vehicle. Otherwise, you
could damage the vehicle.
Observe the following when raising the vehicle: R
To rais et he vehicle, only use the vehicle-spe-
cific jack that has been tested and approved
by Mercedes-Benz. If used incorrectly, the
jack could tip over with the vehicl er aised.R
The jack is designed only to rais ea nd hold the
vehicl ef or as hort time while aw hee lisb eing
changed. It must not be used for performing
maintenance work under the vehicle. R
Avoid changing the whee lonu phill and down-
hill slopes. R
Before raising the vehicle, secure it from roll-
ing awa ybya pplying the parking brake and
inserting whee lc hocks. Do not disengage the
parking brake whil et he vehicl eisr aised.R
The jack must be placed on af irm, flat and
non-slip surface. On al oose surface, al arge,
flat, load-bearing underlay must be used .Ona
slippery surface, an on-slip underlay must be
used ,e .g. rubber mats.R
Do not use wooden blocks or similar objects
as aj ack underlay .O therwise, the jack wil ln ot
be abl etoa chieve its load-bearing capacity
due to the restricted height. R
Make sure that the distance betwee nt he
underside of the tires and the ground does not
exceed 1.2 in (3 cm). R
Never place you rh ands and feet under the
raised vehicle. R
Do not lie under the vehicle. R
Do not start the engine when the vehicl ei s
raised. R
Do not open or close ad oor or the trunk lid
when the vehicl eisr aised.R
Make sure that no persons are present in the
vehicl ew hen the vehicl eisr aised. X
Using lug wrench C ,l oose nt he bolts on the
whee ly ou wish to change by abou to ne full
turn. Do not unscrew the bolts completely.
The jacking points are located just behind the
front whee lh ousings and just in front of the rear
whee lh ousings (arrows).
Vehicles with AMG equipment: the vehicle
has covers installed to protect the vehicl eb ody
next to the jacking points on the outer sills.
X
Fold cover D upwards.282
Changing aw heel
Wheel sa nd tires

from the data show nh ere. You can find the
data applicable to you rv ehicl eont he vehicle
identificatio np late.
Vehicle identification number (VIN) X
Slid et he front-passenger sea ttoi ts front
most position. X
Fold trim C upwards.
VIN D can be seen.
The VIN can als obef ound in the following loca-
tions: R
on the vehicl ei dentificatio np late
( Y
pag e2 89)R
on the lower edge of the windshield
( Y
pag e2 90)
Engine number
C
Emissio nc ontrol information plate, includ-
ing the certification of both federa la nd Cali-
fornia ne missions standards
D
Engine numbe r( stamped into the crank-
case)

Other identifications, for example: R
0W -30R
5W -30R
5W -40
Fuel
Important safety notes
G WARNING
Fuel is highly flammable. Improper handling of
fuel creates ar isk of fire and explosion.
Avoid fire, open flames, smoking and creating
sparks under all circumstances. Switch off the
engine and, if applicable, the auxiliary heating
before refueling.
G WARNING
Fuel is poisonous and hazardous to health.
There is ar isk of injury.
You must make sure that fuel does not come
into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel awa yf rom children.
If you or others come into contact with fuel,
observe the following: R
Wash awa yf uel from skin immediately
using soap and water. R
If fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance with-
out delay. R
If fuel is swallowed, seek medical assis-
tance without delay .Don ot induce vomit-
ing. R
Immediately change out of clothing which
has come into contact with fuel. Tank capacity Model Total capa-
city
SLC 300
18.5 US gal
(70.0 l)
Mercedes ‑ AM Gv ehicles
15.8 US gal
(60.0 l)
Model Of which
reserve
SLC 300
Approx.
2.4 US gal
(9.0 l)
Mercedes ‑ AM Gv ehicles
Approx.
2.1 US gal
(8.0 l)
Gasoline
Fuel grade
! Do not use diesel to refue lv ehicles with a
gasoline engine. Do not switch on the ignition
if you accidentally refue lw ith the wrong fuel.
Otherwise, the fuel wil le nter the fuel system.
Even smal la mounts of the wrong fuel could
resul tind amage to the fuel system and the
engine. Notify aq ualified specialist workshop
and have the fuel tank and fuel lines drained
completely.
! Only refue lu sing unleaded premium grade
gasoline with at least 91 AKI/95 RON.
i E10 fuel contains up to 10% bioethanol.
You rv ehicl eisE 10-compatible. You can
refue ly ou rv ehicl eu sing E10 fuel.
! Only use the fuel recommended. Operating
the vehicl ew ith other fuel sc an lea dtod am-
age to the fuel system, engine and exhaust
system.
! Do not use the following: R
Gasoline with more than 10% ethanol R
E100 (1 00% ethanol) R
Gasoline with methanol R
M100 (1 00% methanol) R
Gasoline with metalliferous additives R
DieselService products and fillin gc apacities 291
Technical data Z

Do not mix such fuel sw it ht he fuel recom-
mended for your vehicle.
! To ensur et he longevity and full perform-
ance of the engine ,o nl yp remium-grade
unleade dg as oline must be used.
If standard unleade dg as oline is unavailable
and yo uh av etor efue lw it hu nleade dg as oline
of al ower grade ,o bs erve the following pre-
cautions: R
Onl yf il lt he fuel tank to half full with regular
unleade dg as oline and fil lt he res tw it hp re-
mium-grad eu nleade dg as oline as soo na s
possible. R
Do not drive at the maximum speed. R
Avoi ds udde na cceleratio na nd engine
speeds ove r3 ,000 rpm.
Yo uw il lu sually find informatio na bout the fuel
grade on the fuel pump. If yo uc anno tf ind the
labe lont he fuel pump, as kt he ga ss tatio ns taff.
i For furthe ri nformation, consul taq uali fied
specialis tw or kshop or visit
http://www.mbusa.com (USA only).
As at emporary measure, if the recommended
fuel is not available, yo um ay also us er egular
unleade dg as oline with an octane rating of
87 AKI /91 RON .T hi sm ay reduc ee ng in ep er -
formance an di ncre as ef ue lc onsu mp tion. Avoid
drivin gatf ul lt hrottle and sudden acceleration.
Never refu e lu si ng
gasoline with al ower AKI.
i The fuel sy ou can us einy ou rv ehicl em ay
diffe rf ro mt he information in the Operator's
Manua ld epen ding on the country .T he fuels
tha th av eb ee na pp roved for your vehicl ec an
be found on the instructio nl abel on the inside
of the fuel fille rf lap.
Informatio nonr efueling ( Y
page 130).
Additive sing asoline
! Operating the engine with fuel additives
adde dl at er can lead to engine failure. Do not
mi xf ue la ddit ive sw it hf uel. Thi sd oe sn ot
includ ea ddit ive sf or the remova la nd preven-
tio nofr esidue buildup. gasoline must onl yb e
mixed with additive sr ecommende db y
Mercedes-Benz. Compl yw it ht he instructions
for us eont he product label. Mor ei nformation
abou tr ecommende da ddit ive sc an be
obtained fro ma ny authorize dM er cedes-Benz
Center. Mercedes-Benz recommends tha ty ou us eb ran-
de df uels tha th av ea ddit ives.
The fuel quality availabl eins om ec ountries may
not be sufficient. Residu ec ould buil dupint he
fuel injectio ns ys te masa result. In such cases,
and in consultation with an authorized
Mercedes-Benz Center, the fuel ma ybem ixed
wit ht he cleaning additive reco mmend e db y
M
ercedes-Benz. Yo um us to bser ve the notes
and mixing ratio ss pe cifie dont he container.
Engine oil
General notes
! Do not us ee ngine oi lorano il filter with
specifications deviating fro mt hos ee xpressly
required for the prescribe ds er vice intervals.
Do not change the engine oi loro il filter in
order to se tr eplacement intervals longe rt han
thos ep rescribed. Thi sc ould otherwis ec ause
damage to the engine or exhaust ga sa ft er-
treatment.
Follo wt he instructions on the service interval
displa yf or changing the engine oil. Thi sc ould
otherwis ec ause damage to the engine or
exhaust ga sa ft ertreatment.
When handling engine oil, observe the important
safety note sons er vice products ( Y
page 290).
The engine oils ar em at che dtot he performance
of Mercedes-Benz engine sa nd service intervals.
Yo us houl dt herefore onl yu se engine oils and oil
filters tha ta re approved for vehicles with main-
tenance systems.
For al is tofa pp roved engine oils and oi lf ilters,
consul tana ut horize dM er cedes-Benz Center.
Or visit the website
http://bevo.mercedes-benz.co m.
The table shows which engine oils have been
approved for your vehicle.292
Service products and filling capacities
Technical data

Model MB-Freigabe or
MB-Approval
All models
229.5
i MB approval is indicated on the oil contain-
ers.
Fillin gc apacitiesThe following values refer to an oil change
including the oil filter.
Model Capacity
SLC 300
6.7 US qt (6.3 l)
Mercedes-AMG
SLC 43 6.9 US qt (6.5 l)
Ad ditives
! Do not us ea ny additive sint he engine oil.
Thi sc ould damag et he engine.
Brake fluid
G WARNING
The brake fluid constantly absorb sm oisture
from the air. Thi sl owers the boiling point of
the brake fluid .Ift he boiling point of the brake
fluid is too low, vapor pockets may form in the
brake system when the brakes are applied
hard. Thi sw ould impai rb raking efficiency.
There is ar is kofana ccident.
Yo us houl dh av et he brake fluid renewe da t
the specified intervals.
Whe nh an dling brake fluid ,o bserve the impor-
tant safety notes on service products
( Y
page 290).
The brake fluid change interval sc an be found in
the Maintenance Booklet.
Only us eb rake fluid approved by Mercedes-
Benz in accordance with MB-Freigab eorM B-
Approva l3 31.0.
Information abou ta pp roved brake fluid can be
obtaine data ny qualified specialist worksho po r
on the Interne ta t
http://bevo.mercedes-benz.co m. i Have the brake fluid regularly replaced at a
qualified specialist workshop and the replace-
ment confirmed in the Maintenance Booklet.
Coolant
Importan ts afety notes
G WARNING
If antifreeze comes into contact with hot com-
ponents in the engine compartment, it may
ignite. There is ar isk of fire and injury.
Let the engine cool dow nb efore yo ua dd anti-
freeze .M ake sur et hat antifreeze is not spilled
next to the filler neck. Thoroughly clea nt he
antifreeze from components before starting
the engine.
! Only ad dc oolant that has bee np remixed
with the desire da ntifreeze protection. You
coul do therwise damag et he engine.
Furthe ri nformatio nonc oolants can be found
in the Mercedes-Benz Specifications for Ser-
vice Products, MB BeVo 310.1, e.g. on the
Internet at
http://bevo.mercedes-benz.com .Orc on-
tact aq ualifie ds pecialist workshop.
! Always use as uitabl ec oolant mixture, even
in countries where hig ht emperatures prevail.
Otherwise ,t he engine cooling system is not
sufficiently protected from corrosion and
overheating.
i Have the coolant regularly replaced at a
qualified specialist workshop and the replace-
ment confirmed in the Maintenance Booklet.
Comply with the important safety precautions
for service products whe nh andling coolant
( Y
page 290).
The coolant is am ixture of water and anti-
freeze/corrosion inhibitor. It is responsible for
the following: R
anti-corrosion protection R
antifreeze protection R
raising the boiling point
If the coolant has antifreeze protection dow nt o
-35 ‡( -3 7† ), the boiling point of the coolant
during operation is approximatel y2 66 ‡
(130 †).Service products and filling capacities 293
Technical data Z

The antifreeze/corrosion inhibitor concentra-
tion in the engine cooling system should: R
be at least 50%. This will protec tt he engine
cooling system against freezin gd own to
approximately -35 ‡( -37 †).R
not exceed 55% (antifreez ep rotection down
to -49 ‡[ -45 †]). Otherwise, heat will not be
dissipated as effectively
If the vehicle has lost coolant, add equal
amounts of water and antifreeze/corrosion
inhibitor.
Mercedes-Benz recommends an antifreeze/
corrosion inhibitor concentrate in accordance
with MB Specifications for Servic eP roducts
310.1.
i When the vehicle is first delivered, it is filled
with ac oolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
i The coolant is checked with every mainte-
nanc ei nterval at aq ualified specialist work-
shop.
Fillin gc apacitiesMissing values were not availabl eatt ime of
going to print.
Model Capacity
SLC 300
Approx .8 .5 US qt
(8.0 l)
Mercedes ‑ Benz
SLC 43 AMG Approx .8 .2 US qt
(7.8 l)
Windshield washer system
Important safety notes
G WARNING
Windshield washer concentrate could ignite if
it comes into contact with hot engine compo-
nent sort he exhaust system. There is ar isk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
! Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or MB
WinterFit. Unsuitable washer fluid could dam-
age the plastic lenses of the headlamps. ! Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked.
Do not use distilled or de-ionised water. Other-
wise, the level sensor may give af alse reading.
When handling washer fluid, observe the impor-
tant safety notes on service products
( Y
page 290).
At temperatures above freezing: X
Fill the washer fluid reservoir with am ixture of
water and windshield washer fluid, e.g. MB
SummerFit. X
Add 1p art MB SummerFit to 100 parts water.
At temperatures below freezing: X
Fill the washer fluid reservoir with am ixture of
water and washer fluid, e.g. MB WinterFit.
For the correc tm ixing ratio refer to the infor-
mation on the antifreeze reservoir.
i Add windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round.
Climate control system refrigerant
Important safety notes The climate control system of your vehicle is fil-
led with refrigerant R ‑ 134a.
The instruction label regarding the refrigerant
type used can be found on the radiator cross
member.
! Only the refrigerant R ‑ 134a and the PAG oil
approved by Mercedes-Benz may be used.
The approved PAG oil may not be mixed with
any other PAG oil that is not approved for
R-134a refrigerant .O therwise, the climate
control system may be damaged.
Servic ew ork, such as refilling with refrigerant or
replacing component parts, may only be carried
out by aq ualified specialist workshop. All appli-
cable regulations, as well as SAE standard J639,
must be adhered to.
Always have work on the climate control system
carried out at aq ualified specialist workshop.294
Service products and filling capacities
Technical data