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Volvo mechanic says to use Valvoline 30W... 200 1983

posted by  someone claiming to be Manolo on  Wed Mar 12 15:30 CST 2003 [RELATED]

30W is an unusual recomendation.

Where do you live? Straight-weight oil means that you are getting more oil and less viscosity additives, which in theory means better lubrication at normal engine temperature, BUT, if it gets very cold or very hot, your engine will likely last longer with a multi-weight oil.

In the published lab tests, it seems that 10-30 oils end up on top.

Most european cars owner's manuals recommend 15W40, but that stuff is hard to find and it is never on sale.

In Sacramento, both the Volvo and the BMW dealers put Castrol 20W50 in every car they service, regardless of owners manual recomendations.

I put 250k miles on my Toyota Starlett using Castrol 20W50 exclusively. It never needed ANY engine work other than alternator and water pump, and it was still in great shape when I sold it.

I've toyed with the idea of using synthetics, but I've had two negative experiences with synthetic gear oils, so I stick to what I know works well for me.






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