2018 MERCEDES-BENZ SLC ROADSTER engine

Do not mix such fuelswitht he fuel recom-
mended for your vehicle.
!To ensur ethe longevity and full perform-
ance of the engine ,onlyp remium-grade
unleade dgasoline must be used.
If standard unleade dgasoline is unavailable
and yo uhavetor efuelwithu nleade dgasoline
of alower grade ,observe the following pre-
cautions:
ROnlyf illt he fuel tank to half full with regular
unleade dgasoline and fil lthe res twithp re-
mium-grad eunleade dgasoline as soo nas
possible.
RDo not drive at the maximum speed.
RAvoi dsudde nacceleratio nand engine
speeds ove r3,000 rpm.
Yo uw illu sually find informatio nabout the fuel
grade on the fuel pump. If yo ucanno tfind the
labe lont he fuel pump, as kthe gass tationstaff.
iFor furtheri nformation, consul taqualified
specialis tworkshop or visit
http://www.mbusa.com (USA only).
As atemporary measure, if the recommended
fuel is not available, yo umayalso us eregular
unleade dgasoline with an octane rating of
87 AKI /91 RON .Thism ay reduc eenginep er-
formance an dincre asef ue lconsu mption. Avoid
drivin gatfullt hrottle and sudden acceleration.
Never refu
e
lusing gasoline with alower AKI.
iThe fuel syou can us einyourv ehicl emay
differf romthe information in the Operator's
Manua ldepen ding on the country.T he fuels
thath aveb eena pproved for your vehicl ecan
be found on the instructio nlabel on the inside
of the fuel fille rflap.
Informatio nonrefueling (
Ypage 130).
Additivesing asoline
!Operating the engine with fuel additives
adde dlater can lead to engine failure. Do not
mixf ueladdit ivesw ithf uel. Thisd oesn ot
includ eaddit ivesfor the remova land preven-
tio nofr esidue buildup. gasoline must onl ybe
mixed with additive srecommende dby
Mercedes-Benz. Compl ywitht he instructions
for us eonthe product label. Mor einformation
abou trecommende daddit ivesc an be
obtained froma ny authorizedMercedes-Benz
Center. Mercedes-Benz recommends thaty
ouuseb ran-
de df uels thath avea ddit ives.
The fuel quality availabl einsomecountries may
not be sufficient. Residu ecould buil dupinthe
fuel injectio nsystemasa result. In such cases,
and in consultation with an authorized
Mercedes-Benz Center, the fuel maybem ixed
wit hthe cleaning additive reco mmend
e
dby
Mercedes-Benz. Yo umusto bser ve the notes
and mixing ratio sspecifie dont he container.
Engine oil
General notes
!Do not us eengine oi lorano ilfilter with
specifications deviating fromt hoseexpressly
required for the prescribe dservice intervals.
Do not change the engine oi loroilfilter in
order to setr eplacement intervals longert han
thos eprescribed. Thi scould otherwis ecause
damage to the engine or exhaust ga safter-
treatment.
Follo wthe instructions on the service interval
displa yfor changing the engine oil. Thi scould
otherwis ecause damage to the engine or
exhaust ga saftertreatment.
When handling engine oil, observe the important
safety note sonservice products (
Ypage 290).
The engine oils ar ematchedtot he performance
of Mercedes-Benz engine sand service intervals.
Yo us houl dtherefore onl yuseengine oils and oil
filters thata reapproved for vehicles with main-
tenance systems.
For alistofa pproved engine oils and oi lfilters,
consul tanauthorize dMercedes-Benz Center.
Or visit the website
http://bevo.mercedes-benz.co m.
The table shows which engine oils have been
approved for your vehicle.
292Service products and filling capacities
Technical data

ModelMB-Freigabe orMB-Approval
All models229.5
iMB approval is indicated on the oil contain-
ers.
Fillingc apacities
The following values refer to an oil change
including the oil filter.
ModelCapacity
SLC 3006.7 US qt (6.3 l)
Mercedes-AMG
SLC 436.9 US qt (6.5l)
Additives
!Do not us eany additive sinthe engine oil.
Thisc ould damag ethe engine.
Brake fluid
GWARNING
The brake fluid constantly absorbsm oisture
from the air. Thisl owersthe boiling point of
the brake fluid .Ifthe boiling point of the brake
fluid is too low, vapor pockets may form in the
brake system when the brakes are applied
hard. Thisw ouldimpai rbraking efficiency.
There is ariskofana ccident.
Yo us houl dhavet he brake fluid renewe dat
the specified intervals.
Whe nhandling brake fluid ,observe the impor-
tant safety notes on service products
(
Ypage 290).
The brake fluid change interval scan be found in
the Maintenance Booklet.
Only us ebrake fluid approved by Mercedes-
Benz in accordance with MB-Freigab eorMB-
Approval3 31.0.
Information abouta pproved brake fluid can be
obtaine datany qualified specialist workshopo r
on the Interneta t
http://bevo.mercedes-benz.co m.
iHave the brake fluid regularly replaced at a
qualified specialist workshop and the replace-
ment confirmed in the Maintenance Booklet.
Coolant
Importan tsafety notes
GWARNING
If antifreeze comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is arisk of fire and injury.
Let the engine cool downb efore youadd anti-
freeze.M ake surethat antifreeze is not spilled
next to the filler neck. Thoroughly clea nthe
antifreeze from components before starting
the engine.
!Only ad dcoolant that has beenp remixed
with the desire dantifreeze protection. You
coul dotherwise damag ethe engine.
Furthe rinformatio noncoolants 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 aqualifie dspecialist workshop.
!Always use asuitabl ecoolant mixture, even
in countries where hig htemperatures prevail.
Otherwise ,the engine cooling system is not
sufficiently protected from corrosion and
overheating.
iHave 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 nhandling coolant
(
Ypage 290).
The coolant is amixture of water and anti-
freeze/corrosion inhibitor. It is responsible for
the following:
Ranti-corrosion protection
Rantifreeze protection
Rraising the boiling point
If the coolant has antifreeze protection downt o
-35 ‡(-37† ), the boiling point of the coolant
during operation is approximatel y266 ‡
(130 †).
Service products and filling capacities293
Technical data
Z

The antifreeze/corrosion inhibitor concentra-
tion in the engine cooling system should:
Rbe at least 50%. This will protectthe engine
cooling system against freezin gdown to
approximately -35 ‡(-37 †).
Rnot exceed 55% (antifreez eprotection 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 ServiceP roducts
310.1.
iWhen the vehicle is first delivered, it is filled
with acoolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
iThe coolant is checked with every mainte-
nancei nterval at aqualified specialist work-
shop.
Fillingc apacities
Missing values were not availableatt ime of
going to print.
ModelCapacity
SLC 300Approx.8 .5 US qt
(8.0 l)
Mercedes ‑Benz
SLC 43 AMGApprox.8 .2 US qt
(7.8 l)
Windshield washer system
Important safety notes
GWARNING
Windshield washer concentrate could ignite if it comes into contact with hot engine compo-
nentsort he exhaust system. There is arisk 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 afalse reading.
When handling washer fluid, observe the impor-
tant safety notes on service products
(
Ypage 290).
At temperatures above freezing:
XFill the washer fluid reservoir with amixture of
water and windshield washer fluid, e.g. MB
SummerFit.
XAdd 1part MB SummerFit to 100 parts water.
At temperatures below freezing:
XFill the washer fluid reservoir with amixture of
water and washer fluid, e.g. MB WinterFit.
For the correctm ixing ratio refer to the infor-
mation on the antifreeze reservoir.
iAdd 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.
Servicew ork, such as refilling with refrigerant or
replacing component parts, may only be carried
out by aqualified 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 aqualified specialist workshop.
294Service products and filling capacities
Technical data