waste of money; if you really feel better making oil companies richer then go for it, but the car don't care; it needs oil, period. It doesn't watch TV commercials or respond to nice looking containers.
The red block 4cyl volvo motors are simply not sensitive to this variable. If you needed to run synthetic oil, you'd know about it. You don't. Use cheap stuff.
Volvo specifies API service quality and suitable weight, nothing more; you are better off increasing your change frequency, using $5 a gallon oil. API SL/SM oil is way beyond the formulations from 20 years ago.
I run 10w30 cheapest all year, from -10F to 90F. Remember, the motor lasts a long time because it is well made, not because you bought the nicely shaped jug.
The only instructions I have ever seen in a Volvo service manual are to do a double oil change if you swap out a cam, indicating only that new clean oil is better than old oil. Synthetic is never mentioned.
Any other advice is emotional nonsense. Spend the money on lunch.
--
Stef (81 245 B21A SU M46 3.91 330000km, 81 244 BW55 3.31 220000km)
|