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winter oil, summer oil... (archive)

[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]

Posted by brandon on August 29, 1999 at 21:28:35:

quick survey of what oil all of you run in the summer and winter. ANY comments are helpful.

i have my own ideas about oil but i want to know what is out there. currently i am running Valvoline 20W-50 in the summer, and i ran that last winter, but i am thinking of going to a 10W-40 or 15W-40 for this winter. i always change every 3000-3500 miles.

also, i was wondering if anyone knows about the detergent properties of Valvoline All climate. i run it in both my bimmers, and they seem to like it. i have a 79 320i with 260,000 (!) and my 85 535i has 160,000. i want to keep the thicker oil in the 320, but in the 535, it's been very well maintained all it's life, and the engine is nearly factory tight. oil comes out nearly clear, but the engine is pretty clean. do you think the Valvoline is high enough or too high in the detergent factor?

another random question: what is the largest size TRX 390 tire available, and does it come in all speed ratings?

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