Question about Oil
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Junior User
Joined: Aug 2009
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Question about Oil
I am in the middle of changing intake manifold gasket right now. So I was thinking, I will be doing a couple oil changes back to back to remove any foriegn bodies from crankcase. I understand that my '66 352 ran on leaded fuel which helped in lubrication of the valves. I want to know what is the best grade of oil for this engine. I use Rotella T6 Full Synthetic in EVERYTHING! Any thought?
Thanks!
Thanks!
Elder User
Joined: May 2009
Posts: 554
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Well in all honesty, unless your engine is a super rebuild with super tight tolerances, just use a good conventional oil. If you want to spend extra on synthetic, go ahead, but modern conventional oil is about half the price and it is much better than what they had in the 60's.
I got all hyped up over oil at one point and then I realized, there are normal cars that have run conventional oil for 300,000+ miles and they are still going. I really believe having clean oil and a good filter is more important than anything. I do run synthetic in my daily driver car. Its really cold where I am in the winter and synthetic oil shines on cold starts as well as in hot temperatures.
Just make sure its clean and changed when its supposed to. No oil is going to magically rebuild your engine and take away 50 years of wear.
I got all hyped up over oil at one point and then I realized, there are normal cars that have run conventional oil for 300,000+ miles and they are still going. I really believe having clean oil and a good filter is more important than anything. I do run synthetic in my daily driver car. Its really cold where I am in the winter and synthetic oil shines on cold starts as well as in hot temperatures.
Just make sure its clean and changed when its supposed to. No oil is going to magically rebuild your engine and take away 50 years of wear.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
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From: Creedmoor, North Carolina
rebel there are many Opinions on oil, mine is be more concerned about changing your oil regularly than spending big money on expensive ones.
Your favorite brand of 10W30 and filter should meet the bill. As mentioned in the last post, all are better than the 50+ years ago when the engine was designed.
John
Your favorite brand of 10W30 and filter should meet the bill. As mentioned in the last post, all are better than the 50+ years ago when the engine was designed.
John
Cargo Master
Joined: Apr 2003
Posts: 2,389
Likes: 58
The best thing you can do is to read about the api oil categories, google it.
To keep it simple, on flat tappet engines, you need about 1300ppm of zinc/phosphorous (ZDDP) to prevent your cam from eating your lifters or vice versa. Most oils in your favorite parts store have the starburst logo with the api rating indicated within. Anything 40w or higher with that starburst will have adequate protection, ie 10W40, 15w50, 20w50, etc, no additives required or recommended.
I wouldn't use diesel oil because of the findings of a good friend who builds engines for a living and has seen the damage that occurs when diesel oil is used in a gasoline engine. To that same effect, too much zddp will damage your engine which is why adding it to an oil which already has sufficient amounts is not recommended. None of this will happen over night, we're talking 10s of thousands of miles.
When in doubt, check the data sheet of your favorite oil. If it contains enough, you're good. If it doesn't, get an additive to boost it to adequate levels.
To keep it simple, on flat tappet engines, you need about 1300ppm of zinc/phosphorous (ZDDP) to prevent your cam from eating your lifters or vice versa. Most oils in your favorite parts store have the starburst logo with the api rating indicated within. Anything 40w or higher with that starburst will have adequate protection, ie 10W40, 15w50, 20w50, etc, no additives required or recommended.
I wouldn't use diesel oil because of the findings of a good friend who builds engines for a living and has seen the damage that occurs when diesel oil is used in a gasoline engine. To that same effect, too much zddp will damage your engine which is why adding it to an oil which already has sufficient amounts is not recommended. None of this will happen over night, we're talking 10s of thousands of miles.
When in doubt, check the data sheet of your favorite oil. If it contains enough, you're good. If it doesn't, get an additive to boost it to adequate levels.
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