Saab 1987 900 - Fuel System Information; Engine Oil Specifications

50 Car care and scheduled maintenance
Fuel
The fuel tank holds 16.6 U.S. gallons (63
litr es). The fuel warning light will come on
when the amount of fuel left in the tank is
below approximately 1.8 U.S. gallons (6 .8
lit er) .
Recommended fuel
Except for the Turbo with Special Perfor-
mance Group option, use unleaded gasoline
octane rating 87 or higher.
NOTE! For the Special Performance
Group option, premium fuel,
minimum octane rating 90.5 is recom-
mended.
Octane rating is arrived at with the formula
MON+ RON octane rating
2
MON is the indu stry Motor Octane
Number. RON is Research Octane Number.
The average ofth ese two is th e number that
appears on th e gas pump under Federal
law . This number is sometimes ref erred to
as the "antiknock index" or Average Octane
Number (AON).
To avoid deposit formation on the fuel in-
je ctors which can adversly affec t perfor-
mance and cause driveability problems
after a cold start, use only quality gasolines
which are blend ed with det ergent/d isper-
sant additives.
Use of gasoline-alcohol blends
Gasoline-ethanol blends (gasohol)
• has sufficient octane rating and is safe to
use in Saab engines
if the blend does not
exceed 10%.
• may cause warm starting problems in
hot weather. Discontinue use if this oc-
curs.
• may require fu el filter replacement soon
after beginning continuous use.
Gasoline-methanol
blends
• are safe to use in Saab engines and fuel
systems providing
that the ratio of
methanol to gasoline does not exceed
5% and that the blend contains a cosol-
vent
such a TEA in amounts equa l to the
methanol to gasoline percentage blend
ratio.
Failure
or damage caused by using
gasolines with excessive alcohol bl ends
(more than the above recommend ed
blending percentages) are not covered by
the warranty.
Engine oil
Check the oil level at regular int ervals. Al-
ways swi tch the engine off first and wait at
least five minutes before checking. Do not
let the level fall below the low er mark on
the dipstick, nor fill beyond the upper
mark; this will cause excessive oil consump-
tion. The distance between the upper and
low er marks corresponds to a volume of ap -
prox. 1
quart (1 liter). Top up with oil of a
recommended grade as necessary. After
Oil filler cap with dipstick
checking the oil and topping up as neces-
sary,
push the dipstick all the way down
an d tighten the cap securely.
SAE 10W-30 is the primary oil recommen-
dation for your Saab. Turbos require SAE
10W-30 meeting the API Service rating SF I
CD (preferred) or SFICC (acc eptable).
Naturally aspirated models may use 10W-
30 oil meeting the API Service SF /CC. For ex-
tended use in sub-zero temperatures SAE
5W-30 may be used provided it meets the
API Service requirements. In extremely hot
climates 15W-40, th at meets the required
API Service ratings, may be used. Extra oil
add itives are not recommended.
NOTE! Your new car came with a
"break- in" filter. The service lif e of this
filter is such that it MUST be replaced at
the 1000 mile service.
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