It meets the current API standards for motor oil.
Yes it works as well as most other synthetics out there unless you have some specific need/heavily modified vehicle.
Yes you can use 5w-30 in vehicles that call for 5w20 or 0w20. The 20 weight oils are for CAFE needs, not engine longevity. But its best to not use a 20 weight oil in a car that came with 30 weight when new.
Available ($63.99 each):
- 4-Pack 5-Quart Kirkland Signature Full Synthetic Motor Oil [costco.com] (5W-30)
- 4-Pack 5-Quart Kirkland Signature Full Synthetic Motor Oil [costco.com] (0W-20)
- 4-Pack 5-Quart Kirkland Signature Full Synthetic Motor Oil [costco.com] (5W-20)
- 4-Pack 5-Quart Kirkland Signature Full Synthetic Motor Oil [costco.com] (0W-20 & 5W-30)
- 4-Pack 5-Quart Kirkland Signature Full Synthetic Motor Oil [costco.com] (0W-20 & 5W-20)
- 4-Pack 5-Quart Kirkland Signature Full Synthetic Motor Oil [costco.com] (5W-20 & 5W-30)
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In any case unless you own a C8 corvette which requires dexos R or a euro spec model it doesn't really matter all these oils meet API and in the case this one dexos 1 gen 3 specs which means it is good for the plebs.
Of course M1 is a fine oil, but so are the warren versions. I use both depending upon the rebate cost/price at the time along w/ Pennzoil.
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TLDR is yes it's perfectly fine. The vast vast vast majority of people will be perfectly fine with Kirkland oil. Unless you have a supercar.
https://www.walmart.com/ip/Super-.../361679645
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