- $8 manufacturer's savings is valid 8/30/23 through 09/24/23. While supplies last. Limit 5 per member.
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- Details of Costco's return policy here [costco.com].
PQIA Analysis of 5w30 in 2021, when it was updated to be rated API SP and ILSAC GF-6A: https://pqia.org/kirkland-full-sy...motor-oil/
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https://bobistheoilguy.
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https://www.youtube.com/watch?v=l9il_pi
I still have many gallons of mobil 1 and rotella gas truck that I got nearly free after rebate.
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"about 7-8 years
Most conventional oil brands will have a shelf life of about 5 years. Synthetic oil and synthetic blend oil will last about 7-8 years, and maybe even longer. If you cannot find the expiry date, make sure you use up any half-opened or unopened motor oil bottles within 2-5 years of the manufacturing date."
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The 0W-20 and 5W-30 appear to be Dexos 2 Gen 2. I haven't looked up whether D2G2 has been tested to mitigate low-speed pre-initiation (LSPI), common in some US direct-injection engines, especially turbos (DIT).
I personally just changed the oil in my turbo Subie (FA20DIT) with Kirkland Signature 5W-30 Dexos 1 (ONE) Gen 3, which IS tested to mitigate LSPI.
When I researched this several years ago, the Dexos 2 (not gen 2) was spec'd by GM for their small turbos, but then they changed it to Dexos 1 due to LSPI. I would personally stick with D1G3 if you have a small turbo engine with direct injection. If you don't have direct injection, then D2G2 will likely be more robust.
All 3 are API service SP- Resource conserving rated though.
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looks like amazon basics, walmart super tech and kirkland are all warren
This is almost as good of a deal, without having to deal with a mail-in rebate.
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