 Motor oil, What weight? |
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| 911914 |
 Dec 27 2004, 11:33 PM
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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. |
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| Tom73 |
Dec 29 2004, 09:56 AM
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Member Group: Members Posts: 180 Joined: 20-September 04 From: Central Texas Member No.: 2,792 |
My understanding has always been that a
10w30 will flow like a 10 weight when the oil is cold and then once the oil is up to temp it will flow like a 30 weight. (same for 15w40 or 20w50 etc etc) So would seem to me you would want a 10 or a 5 to get the oil flowing at start up. That is when the wear is worse and you need to get the oil moving as quickly as possible. Then when the engine warms up the oil will act like as 30 or 40 or what ever is needed in your engine. To me it would sound like you would need a 10w30 or maybe a 10w40. You would not want anything over a 10 for the cold side, then you would want a 30 or 40 for the hot side depending upon your clearances and the wear in your engine. Just my two cents..... tom... |
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Posts in this topic
911914 Motor oil Dec 27 2004, 11:33 PM
markb I use 20/50 in the 914s & the Bus (2.4/6). Dec 28 2004, 12:23 AM 911914 Thanks Mark, I too use the 20-50 (Castrol) in my A... Dec 28 2004, 12:40 AM ChrisReale 15-40 is prolly Shell Rotella, which is a good oil... Dec 28 2004, 04:20 AM type11969 I use 5w-30 and have plenty of pressure all around... Dec 28 2004, 07:12 AM 911914 New twist to my oil question. Called the PO engin... Dec 28 2004, 01:18 PM Root_Werks Woah you guys, you are all giving great advise, bu... Dec 28 2004, 01:30 PM SirAndy Dec 28 2004, 01:32 PM Rhodes71/914 I've always used 10-40 in all my VW aircooled ... Dec 28 2004, 01:54 PM 7391420 kendal straight 30 in winter, straight 50 in summ... Dec 28 2004, 02:04 PM Cap'n Krusty <... Dec 28 2004, 03:06 PM type11969 how can you say it is too thin if I have plenty of... Dec 28 2004, 03:23 PM SirAndy htt... Dec 28 2004, 04:40 PM ChrisReale Forget the weight, just make sure you use oil, per... Dec 28 2004, 11:46 PM dlo914 20w50 / W = Winter NOT Weight ... Dec 29 2004, 12:42 AM dlo914 use higher winter if your region is prone to very ... Dec 29 2004, 12:46 AM type11969 yeah, my understanding is the same as yours Tom. I... Dec 29 2004, 10:19 AM rdauenhauer So what about the "newer car" spec 0-40 syn oils (... Dec 29 2004, 10:32 AM type11969 The problem I have with mobil one in a t1 or a t4 ... Dec 29 2004, 11:21 AM Steve According to Bruce Anderson in Tech notes II, this... Dec 29 2004, 11:41 AM Aaron Cox larger number = thicker oil right?
50= THICK
10= ... Dec 29 2004, 11:45 AM Steve The higher the number the thicker the oil.
I remem... Dec 29 2004, 11:50 AM type11969 I seem to remember Jake stating that he had proble... Dec 29 2004, 12:26 PM dlo914 http://www.914world.com/bbs... Dec 29 2004, 12:29 PM Tom73 Dec 29 2004, 05:25 PM
Steve Dec 29 2004, 08:22 PM |
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