1971 LT1 Oil ?
Le Mans Master
Joined: Oct 2010
Posts: 6,938
Likes: 848
From: melbourne florida
2023 C3 of the Year Finalist - Modified
You couldn't pay me to put that STP crap in my neighbors lawn mower. Valvoline racing either regular or synthetic. Amzoil Lucas are all good. I use 15 50 red line synthetic I've used it for years in cars and harleys. The cam and lifters I just took out were perfect. And I went back with another flat tappet cam and have confidence it will live a long life.
Burning Brakes
Joined: Jun 2020
Posts: 881
Likes: 113
DRYDENE DRF series; tain't cheap
all weights very high in zinc etc and company publishes it
https://www.drydene.com/drfracing/
all weights very high in zinc etc and company publishes it
https://www.drydene.com/drfracing/
Le Mans Master
Joined: Oct 2010
Posts: 6,938
Likes: 848
From: melbourne florida
2023 C3 of the Year Finalist - Modified
Team Owner
Joined: May 2001
Posts: 87,375
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From: Western NY
Le Mans Master
Joined: Oct 2010
Posts: 6,938
Likes: 848
From: melbourne florida
2023 C3 of the Year Finalist - Modified
If you are thinking that dumping a can of that stuff in your oil will provide you with enough protection for your cam I can guarantee you it wont. If you think it will call any cam grinder and they will tell you.
if you think you have to run additives in your oil, maybe you should get a better oil. There is more than just zinc involved in this even if it has 1200 ppm of zinc it dilutes into the other oil. Which means you would need to run straight STP to have the correct level.
if you think you have to run additives in your oil, maybe you should get a better oil. There is more than just zinc involved in this even if it has 1200 ppm of zinc it dilutes into the other oil. Which means you would need to run straight STP to have the correct level.
Last edited by 7t9l82; Jun 23, 2020 at 09:04 AM.
Racer
Joined: Jan 2008
Posts: 295
Likes: 58
From: Arvada Colorado
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Burning Brakes
Joined: Jun 2020
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Le Mans Master
Joined: Mar 2004
Posts: 7,502
Likes: 1,510
From: Little Rock AR
Diesel Oil was a high quality economical alternative that still had the additives after the EPA ruined the gasoline engine oil specs.
GM would never have needed to recommend diesel rated oil because they stopped making the flat tappet engines decades ago.
Diesel rated oil was more robust (expensive) than conventional gasoline rated engine oil at the time when they were producing flat tappet engines. There is a reason it was never recommended by GM - Cost.
GM would never have needed to recommend diesel rated oil because they stopped making the flat tappet engines decades ago.
Diesel rated oil was more robust (expensive) than conventional gasoline rated engine oil at the time when they were producing flat tappet engines. There is a reason it was never recommended by GM - Cost.