Quote:
Originally Posted by Jay S
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It is a great choice but make sure you use good rubber gaskets, it has a higher detergents in it than VR1 for extends oil changes on the street, seems to test gaskets. It is the synthetic counterpart to HR5, both are highed in zddp than VR1. But VR1 doesn’t need as much zddp because it does not have as much detergents. I think HR6 and GP1 both take modern rubber seals to keep them dry. I have not tried HR6.
Yep…It’s Fine oil  |
Thinking this morning. I should not have compared HR6 to the GP1. I think what makes the GP1 difficult to seal up is the high amount of Moly in it. IRC, GP1 has something like 1300, HR6 has no moly in it. GP1 is one of those oils that does well on the dyno, beating the competitive oils by decent margins, then you try running it and can’t keep it in the engine. LOL
When you see that an oil makes more power, like the Shaeffer racing oil that was mentioned. Those oils almost always have more moly and pretty consistently make more power.