See also:

High/low beam headlights
Continuous high beams 1. Set the ignition to mode II. 2. With the light switch in position 0 or , pull the turn signal lever toward the steering wheel to position 2 to toggle between high and low ...

Deposit control gasoline (detergent additives)
Volvo recommends the use of detergent gasoline to control engine deposits. Detergent gasoline is effective in keeping injectors and intake valves clean. Consistent use of deposit control gasolines ...

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