Fuel System Requirements The high performance V-8 engine in your Corvette is designed to operate efficiently on premium type gasolines. See page 43 for
octane requirements. Use of regular grade gasolines in higher
performance engines may result in potentially dangerous engine
detonation.
FUEL
FILLER
CAP In some areas, grades of gasolines may be encountered which result
in severe detonation. Should this occur consult an authorized Chevro
let
Dealer so that adjustments can be made to eliminate this detona
tion or reduce it to a safe level.
Lift tip the Corvette emblem on the rear deck to reach the fuel filler cap. II the cap is lost be sure to replace it with a vented cap.
In
all cases excessive engine detonation, or knocking, should be
avoided in order to prevent possible eng ine damage .
Oil System Requirements
Lowest Anticipated Recommended Singhl Recommended Multi-Tempefohue Viscosity Oil ViltIcosltyOil
32 0
F. SAE 20 or 20W SAE 10W-30
0 0
F. SAE lOW SAE IOW-30
Below 00
F. SAE 5W SAE 5W-20
SAE
30 or IOW-30 is recommended when most o[
the driving is at high speeds and/or at temperatures
above gO°F . For continued reliability and perform- ance
from your Corvette
engine, it
is recommended
that you use an oil whic h, according to the label on the can, is (I) intended for service MS and (2) passes car makers' tests or meets General
Motors Standard GM 4745 -M.
Follow the accompanying vicosity
and change interval recommenda
tions
and check the oil leve l (with
engine hot) on the dipstick regu
larly. Keep oil level between the
FULL and ADD marks, by adding oil when level is at or below ADD mark. It is not
necessary to keep the level at the FULL mark. DO NOT OVERFILL.
