Tempted
Banned
- Joined
- Nov 22, 2011
- Messages
- 1,243
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No, one quart too much won't hurt the motor. But oil additives can reduce oil flow, which increases oil pressure. I used to think that putting Lucas Oil Treatment in my motors was helping it because the oil pressure was higher. As it turns out the reason pressure was higher is because the additive blocked the oil passages and impeeded flow, which raised the pressure but dropped the volume.