Do not exceed speed limit, Worn or dirty spark plugs, Incorrect spark plug gap – Volvo 940 User Manual

Page 109: Dirty air cleaner, Incorrect valve clearance, Dirty engine oil and clogged oil filter, Dragging brakes, Incorrect front end alignment, Low tire pressure

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1993 Volvo 940

pumps' ability to supply the engine with an adequate supply of fuel. Therefore, it is advisable to refuel as
soon as possible when the needle nears the red zone, or when the fuel warning light comes on.

CAUTION: Take care not to spill gasoline during refueling.
Gasolines containing alcohol can cause damage to painted surfaces, which may not be covered under
the New Vehicle Limited Warranty.
Do not use gasoline containing methanol (methyl alcohol, wood alcohol). This practice can result in
vehicle performance deterioration and can damage critical parts in the fuel system.
Such damage may not be covered under the New Vehicle Limited Warranty.

pg. 4:3 Driving economy, Carbon deposits

Economical driving does not necessarily mean driving slowly

Better driving economy may be obtained by thinking ahead, avoiding rapid starts and stops and
adjusting the speed of your vehicle to immediate traffic conditions. Observe the following rules:

Bring the engine to normal operating temperature as soon as possible by driving with a light forot on

the accelerator pedal for the first minutes of operation. A cold engine uses more fuel and is subject to
increased wear.

Whenever possible, avoid using the car for driving short distances. This does not allow the engine to

reach normal operating temperature.

Drive carefully and avoid rapid acceleration and hard braking.

Do not exceed speed limit.

Avoid carrying unnecessary items (extra load) in the car.

Check tire pressure regularly (check when tires are cold).

Remove snow tires when threat of snow or ice has ended.

Note that roof racks, ski racks, etc., increase air resistance and thereby fuel consumption.

Turbo: try to keep the boost pressure gauge in the black range.

Utilize overdrive at speeds above approx. 45 mph (70 km/h)

Avoid using automatic transmission kick-down feature unless necessary.

Other factors which decrease gas mileage are:

Worn or dirty spark plugs

Incorrect spark plug gap

Dirty air cleaner

Incorrect valve clearance

Dirty engine oil and clogged oil filter

Dragging brakes

Incorrect front end alignment

Low tire pressure

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