Hammermechanicman
Lawn Addict
- Joined
- Jan 10, 2020
- Threads
- 65
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- 3,839
I will let someone else test that. I just ordered a few more cases of 10W-30 SJ oil with zinc. It is funny how oil not specified for automotive use doesn't have to meet all the EPA regs and can have more zinc in it. I have had customers ask if i use the latest rated super synthetic (expensive) oil. No, i use a cheaper oil that works better.