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
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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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Actually they do have at least 12% or more additive I said "can" because the treat rates vary a percent or so but yeah I know what's in them.
So the ex-engine oil formulator who sits with the API / ILSAC group is a nonsense guy but a mechanic with a youtube channel is who you trust? LOL That's fine by me I don't have any vested interest in this. Just happen to know a lot about it so it's fun for me.
Oh as far as "Actual testing" I ran them at Intertek and SWRI all of the actual engine tests to qualify for API and the ones for GM, BMW, MB, VW etc. so yeah I know what the actual engine tests are, not some made up test with coffee pots.
I never said Super Tech was sh!t but I am saying you can't compare a Hyundai to a BMW and say they all have 4 wheels they're the same!
Apparently they wanted to delete my reply. Whatever .
Short of it is. Lake isn't just some mechanic 😂. That tells me all I need to know about you
Lake Speed Jr. is a certified lubrication specialist and a well-known tribologist, meaning he specializes in the science and engineering of friction and lubrication. is a member of the Society of Tribologists and Lubrication Engineers (STLE) and the Society of Automotive Engineers (SAE).
But sure . He doesn't know what he's doing
And he used the dyno to run an engine to test wear metals in the oil . Tell me how that's not a specific test .. apples to apples vs what people think is the best oil. Including the additives added to each .
Short of it is. Lake isn't just some mechanic . That tells me all I need to know about you
Lake Speed Jr. is a certified lubrication specialist and a well-known tribologist, meaning he specializes in the science and engineering of friction and lubrication. is a member of the Society of Tribologists and Lubrication Engineers (STLE) and the Society of Automotive Engineers (SAE).
But sure . He doesn't know what he's doing
And he used the dyno to run an engine to test wear metals in the oil . Tell me how that's not a specific test .. apples to apples vs what people think is the best oil. Including the additives added to each .
In the end I just told you what was actually in those oils so you can decide if you want OCP VM, low ad pack or clean VM and beefier ad pack.
In the end I just told you what was actually in those oils so you can decide if you want OCP VM, low ad pack or clean VM and beefier ad pack.
I didn't cuss ? Racing oils are different , but those used in his test were not "racing" oils . They were their respective brands normal oils. He didn't test their signature series on those test. He explained the oil used to be apples vs apples .
Regardless . The supertech/ Kirkland all match higher end oils . You use it and change your oil at 5k miles or less and you won't have a problem .
Not sure what the argument is here ?
Lake knows what he's talking about . He certainly knows how to test oil . And all the test I've seen from him and others have indicated that there is basically no difference in these oils . Especially if changed regularly
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.
So genuine question. Why do they recommend changing the oil of a car that hasn't been run for years before you start it again?
Growth mindset.
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Thanks!
As said by many, and correctly, you can use 0w-20 just fine. Same motor outside the US even says you can use 5w-30.
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