Motor oil, What weight? |
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Motor oil, What weight? |
911914 |
Dec 27 2004, 11:33 PM
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#1
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Member Group: Members Posts: 51 Joined: 24-December 04 From: Vancouver, Washington Member No.: 3,334 |
I am sure this has been hashed out here many times before and I don't want to start another oil thread but I be a newbie. Car I just purchased was rebuilt about 20k ago ('74 2.o) and the records show 15-40 weight has been used since rebuild and at all services. Now is this not a heavy diesel weight oil? I use this weight in my BMW 535i as recommended from factory, but a small air cooled VW mill using this heavy weight? Doesn't sound right to me. Clue me in please. Oh, engine is dual Weber's and a Web cam.
Thanks. |
Steve |
Dec 29 2004, 11:41 AM
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#2
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914 Guru Group: Members Posts: 5,614 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
According to Bruce Anderson in Tech notes II, this is Porsche's latest recommendations for 356, 912, 914-4, 914-6 and 911 through 1973.
For summer or warm climates: SAE 20W-50 SAE 20W-40 SAE 40 For winter or in cold climates: SAE 15W-40 SAE 10W-30 Bruce also recommends not using synthetic oil for motors that came from the factory without it. The oil properties are diferent and the motor will leak oil. |
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