This video compares the performance of Costco’s new motor oil with that of Walmart’s Supertech oil. If you don’t want to watch the entire video, I will summarize the findings for you: The Kirkland oil performed essentially the same as the Walmart oil and Amazon’s Basic oil–and that means very goo…

@Jafepf_144731 . If you mean switching from Heavy Detergent (HD)oil to synthetic oil, there should be no problem if you stay with the same viscosity (e.g. 5W-20 HD to 5W -20 synthetic. My experience in switching was with an engine on a push lawnmower. The manual called for 30 weight HD. It was usi…

[image] Triedaq: My experience in switching was with an engine on a push lawnmower. That would be in a static operating condition. Where the engine operates at a constant RPM. Transient condition is where the engine is operated thru the RPM range. Comparing apples to oranges. Tester

@Tester . All I was trying to say is that there is no harm in switching from regular oil to synthetic. I have no idea whether or not it would reduce oil consumption in a worn automobile engine. I use regular HD oil in our 2003 Toyota 4Runner and it doesn’t use oil. Our 2917 Toyota Sienna and our …

Isn’t GM 6094M an older spec . . . I want to say the older spec for 5w30, several years before Dexos 1

[image] Jafepf_144731: Is it safe to switch from HD oil? 2 synthetic oil You can go back and forth between oils as long as they meet the engine specs.

You might want to be sure that any type multigrade oil is appropriate for your mower. My book says to use only single grade.

Thanks for the update. I wasn’t aware that I had 2 accounts.

I have no idea ho that would be. I’ll look into it. Thanks.

[image] FRANKM: Thanks for the update. I wasn’t aware that I had 2 accounts. Perhaps you’ll get 2 IRS stimulus checks! :grin: Feel the magic! :shushing_face: CSA :palm_tree: :sunglasses: :palm_tree:

Testing Costco's Kirkland Full Synthetic Motor Oil

Maintenance/Repairs

MikeInNH April 17, 2020, 2:05pm 53

You can go back and forth between oils as long as they meet the engine specs.

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Testing Costco's Kirkland Full Synthetic Motor Oil

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