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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Thos is car oil. Small engine oil is typically different. You bought a honda engine, put the right oil in it.
and if you're a new homeowner.. my suggestion is to keep those books. you'll refer to them over time
Also there is this app called Google where you can find online versions of manuals
Ow-16?
What car?
It's all about those mpgs now I guess
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VOA tests at BITOG reveal that stored oil doesn't really have a shelf life.
Mobil at one point claimed 7 years, but that was a number to cover themselves, and testing shows it's much longer. The problem is the oil goes out of spec for new cars at some point, rather than actually going "bad".
What I would suggest for long term storage is that you shake the bottle right before you pour it in. It's possible that additive settling can occur.
VOA tests at BITOG reveal that stored oil doesn't really have a shelf life.
Mobil at one point claimed 7 years, but that was a number to cover themselves, and testing shows it's much longer. The problem is the oil goes out of spec for new cars at some point, rather than actually going "bad".
What I would suggest for long term storage is that you shake the bottle right before you pour it in. It's possible that additive settling can occur.
Yeah I always laugh at these questions....oil was in the ground for millions of years so it's not going to "spoil" in 5 years
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This is good advice until your hands are covered in filth, you have poor coverage and you just want to know the answer quickly. My garage is a cell and wifi black hole.
Find the manuals and print them out.
Or level up - find all the important details and type yourself up a cheat sheet. Have multiple copies laminated and put them all over your shop.
I have all the part numbers for replacement blades, replacement wheels, replacement carburetors, spark plugs, air filters, oil filters, oil type and what sockets/tools are needed.
I had it on my phone, in a "OneNote" but I'd rather print another cheat sheet than replace another phone, or deal with having to walk outside the garage every time to load it up.
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You can buy in store but for some reason its cheaper online this time.
What car?
It's all about those mpgs now I guess
Both my wife's 2024 Camry and daughter's 2023 Rav 4 takes 0W-16. My 2021 Tacoma takes the 0w-20. Had a case of 5W-20 from another Kirkland oil sale my old 2007 Taco used I'm switching in between changes on my new Taco.
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Warren I believe
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