The spark plugs on a Volvo S70 T5 should typically be changed every 30,000 to 60,000 miles, depending on driving conditions and the type of spark plugs used. It's best to consult the owner’s manual for specific recommendations based on the model year and any updates. Regular maintenance checks can help determine if they need to be replaced sooner.
30000 miles
every 100,000 km
vacum leak
The manufacturer recommends that the spark plugs are changed every 30,000 miles. Many individuals have experienced a much longer life for the spark plugs.
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Once on 1-2 year on regular spark plugs. Once every there years on High end spark plugs.
100K if they are platinum plugs, 50K if they are regular plugs.
the transmition ,is probably not adjusted to the spark plugs,or their not the right spark plugs
About every 50,000 miles.
about every 75000 miles
According to the owners manual, they have platinum plugs that should be changed at 100,000 miles.
There is a black cover on top of the cylinder head (the one with 20V written on it), the spark plugs are under it.