Oil question in AZ
Our '64 has a crate motor that on the manual I received with the car, is handwritten "Installed 3/04". GM Performance 350/333hp Part No. 12496968 Vortec. What oil would be best to run out here in the high summer temps? Currently running synthetic 5W/30 Mobil 1, doing an oil change so your thoughts would be appreciated. Thanks in advance!
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Joe Gibbs racing oil. If it has a roller cam use the synthetic if not conventional
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15W-40 Rotella T for about anywhere in the country.
I wouldn't run 5/30 in any gen 1 small block. Its not a Toyota. Doug |
Originally Posted by AZDoug
(Post 1598859505)
15W-40 Rotella T for about anywhere in the country.
I wouldn't run 5/30 in any gen 1 small block. Its not a Toyota. Doug |
Thanks for the input reno stallion and AZDoug! My bad, it is 10W 30 that was in it. Motor is flat tappets. How much zinc does it need in the oil? Can I go from synthetic back to conventional?
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Originally Posted by 64SilverbluePhx
(Post 1598860013)
Thanks for the input reno stallion and AZDoug! My bad, it is 10W 30 that was in it. Motor is flat tappets. How much zinc does it need in the oil? Can I go from synthetic back to conventional?
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reno stallion what weight do you run? I looked up Joe Gibbs and they have several weights... Though I didn't see a 15W-40... thanks again both of you for the help!
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Originally Posted by AZDoug
(Post 1598859505)
15W-40 Rotella T for about anywhere in the country.
I wouldn't run 5/30 in any gen 1 small block. Its not a Toyota. Doug |
I would not run a flat tappet cam with an oil without zinc. Dose it say military storage protection:rofl:
https://cimg5.ibsrv.net/gimg/www.cor...190ba006b6.jpg |
Don't buy cheap oil made for diesel pickups
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I've used the Rotella 15W 40 for years with good results. '57 270.
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Originally Posted by reno stallion
(Post 1598862841)
Don't buy cheap oil made for diesel pickups
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Originally Posted by GTOguy
(Post 1598867552)
Why not? It's excellent oil and proven effective in older flat-tappet engines for hundreds of thousands of miles. Much better than racing oil, which would be my last choice on a street driven car.
Doug |
Originally Posted by AZDoug
(Post 1598867678)
And diesels have very high loads on bearings and cylinder walls due to the extreme high compression. It isn't cheap oil, it is relatively inexpensive oil compared to specialty stuff.
Doug |
Run the Rotella 15W 40. It has plenty of ZDDP for a flat tappet motor. I've run it for years in my old Vettes with zero issues. Forget the boutique and "racing" oils. They only lighten your wallet.
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Originally Posted by GTOguy
(Post 1598867552)
Why not? It's excellent oil and proven effective in older flat-tappet engines for hundreds of thousands of miles. Much better than racing oil, which would be my last choice on a street driven car.
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Search for threads started by me. Download the oil article pdf, read it thoroughly, and you will be able to make an intelligent decision based on facts, not opinions or misinformation.
Duke |
I think by racing oil he means non detergent?
There is NO perfect oil that will make a huge difference. i run a wix filter and the cheapest oil for my DD (lsx) i can find. 185k and runs just fine. USed Mobil 1 for the first 60k it was just wasted money obviously. If machining assy and parts quality is good, you arent revving the thing to the moon cold most engines can last indefinitely. An expensive high rpm deal,upgrade some. Wiht flat tappet cams having shear strength is more important than just a "slippery" oil. See comment above about bearing load. |
Originally Posted by SWCDuke
(Post 1598871347)
Search for threads started by me. Download the oil article pdf, read it thoroughly, and you will be able to make an intelligent decision based on facts, not opinions or misinformation.
Duke Even clicking right on your name shows 0 threads and only four posts. Doug |
Originally Posted by reno stallion
(Post 1598867864)
Not quite sure what you mean about racing oil did you not read the jug far superior to oils with out zinc. Has every thing that cheap oil has and then some. Don't get me wrong I use rottela in my dodge diesel but not my hot rods. Number one cause of cam failure lack of zinc in todays common oils.They took out the good additives some time ago. Probably cause cancer
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