Re: Which brand oil?

Posted by Bob Kerr on August 22, 2001 at 06:55:05 from (64.12.101.168):

In Reply to: Which brand oil? posted by Fight Starter on August 21, 2001 at 22:46:14:

Dad had a 69 Chevy Impala, 300hp 350, that had 380,000. on the clock when a drunk driver ran a light and tore the sheetmetal off the front of the car. Incredibly the wreck didn't hurt the engine, but totalled the car for sure! I sold the engine and trans to a guy who put it in a 37 chevy streetrod and although I am sure he rebuilt it It is still going strong. Dad used Marathon Oil in it since the very first oil change. The car smoked a little bit but mostly from valve guides. It would burn about 1-1.5 quarts between oil changes. the engine was never rebuilt when we had it and only had been apart at 60,000 for a valve grind.My Tow vehicle is a 71 Oldsmobile wagon. It has over 400,000, mostly towing miles,on the Olds 350 and is just starting to smoke some going down mountain grades in lower gears with the trailer on the back. No smoke from it at the rest of the time.I have used straight 30 wt Marathon in it since I have had it. Execpt when it was very cold out and then went to 10-40.I think the material an engine is made from has more to do with how long it will last than the brand of motor oil used in it!. High Nickel Iron blocks are very tough! I have seen a bunch of Olds engines with 100,000- 200,000 miles and have no ring ridge. Olds used one of the highest Nickel alloys GM ever used. Chevy also used a high nickel Iron alloy in the 68-70 300hp 350.I don't believe they did in most of the other engines they built as it was more expensive. I have talked with a bunch of people who had those engines and most of them had super high miles and were still going great without rebuilds. Of course maintenance is also a big factor.

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