See also:

Use of Additives
With the exception of gas line antifreeze during winter months, do not add solvents, thickeners, or other store-bought additives to your vehicle's fuel, cooling, or lubricating systems. Overus ...

Engine oil
Engine oil must meet the minimum ILSAC specification GF-4, API SL, or ACEA A1/B1. Lower quality oils may not offer the same fuel economy, engine performance, or engine protection. Volvo recommen ...

Snow chains, snow tires, studded tires
Winter driving conditionsSnow chains Snow chains can be used on your Volvo with the following restrictions: • Snow chains should be installed on front wheels only. Use only Volvo approved snow ...