Here's a search for 12 packs of oil jugs [costco.com] if you'd rather get them.
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expired Posted by HappyPixel • Apr 9, 2025
Apr 9, 2025 10:45 AM
Item 1 of 2
Item 1 of 2
expired Posted by HappyPixel • Apr 9, 2025
Apr 9, 2025 10:45 AM
Costco Members: 4-Pk 5-Qt Kirkland Signature Full Synthetic Motor Oil (various)
+ Free Shipping$54 each
$70
Costco Wholesale
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The stuff sold at a price point (bargain basement) will meet API SP and dexos1 will have a treat rate of about 8.5% wt in the engine oil. Treat rate is the focus for products sold under a bid as the additive is sold by the ton, the less you use the cheaper the product. The more premium stuff will meet ACEA, MB 229, VW 501, etc. and have a treat rate of closer to 13%.
Now the clincher for me is that cheap additive package will pair with a cheap viscosity modifier (VM), the stuff that makes it a 0W-xx, usually some olefin copolymer (OCP). These are what I refer to as dirty polymers because they tend to leave more deposits as they break down (piston walls, skirts, rings, turbo bearings).
Those premium packages because they need to pass more stringent Euro specs will use a styrenic type polymer usually a star polymer which is a cleaner and more shear stable VM. This helps us keep the pistons cleaner = less scuffing, blow by, better power, better fuel economy, and these days more importantly a cleaner turbo as those are very hard on oil.
In the end the cheap stuff will not kill your engine, but much like living on ramen noodles and McDonalds it isn't going to make that engine stay at like new performance. I used to formulate this stuff before I retired so happy to answer questions.
Lower viscosity in the US is for CAFE reasons, not motor longevity.
page 8 and 9
https://engineoil.api.o
Warren Oil
https://www.warrenoil.c
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For all- if this oil isn't the exact spec for your car, buy the closest weight to what you need, dump it into a saucepan, and cook it over low heat on your stove for about 1/2 hour. After it cools again put it back in the jug. It'll be good to go after that.
Yes, they are on the middle transparent line.
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They have had a lot of growing pains in the last 5 or so years. My worry is not just now but 10+years/100k+ from now.
Even Honda has had issues. So no manufacture is immune but some think old Toyota is the same as new.
They still do a good job of manufacturing cars but they are also beginning to slide into the "rely on your brand" territory.
4runners, for example, are not worth their asking price. Tacomas aren't either. Both weak cars that are easily outclassed by peers.
I have a suburban that takes 8qt and a Tacoma that takes 6qt. I buy 5 cases one weekend and another 5 cases the next weekend. Lasts me 2 years until the next time these go back on sale. This is a solid deal, usually they only discount it to $30/2pk box
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