When it comes out of the earth after what a million years someone adds a couple substances to it and now its fresh.
Is it not a good idea to buy freshly blended oil?
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Personally I prefer a little aged and let it aerate for a while.
But the smell is a good clue as to how fresh the additives are.
At least to my Discerning nose!
But the smell is a good clue as to how fresh the additives are.
At least to my Discerning nose!
Bc it's there and needs to be used up. Ran 20+ yo Pennzoil yellow bottle oil in my old SBC 350 just fine for 3-5k miles, can't remember the exact length. Ran 10yo oils in it and some other engines I was given and would use both again without hesitation. Pour half in, shake the heck out of it until the additives suspend again, fill it up, and go about your day. Yes, I watched his video, and yes, I agree it technically does degrade, but I'd still do it again without hesitation. Waste not, want not, my friend, that's money sitting there.
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Patman
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You're talking about using oil that the manufacturer says has aged out, to save what, $50 in oil, in your car that MSRPs at about $68k USD. I don't understand the economics of that, but I understand it's just a different approach and not my engine regardless.
Patman
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The 7 year old ESP Formula in my Vette right now is actually a better oil than what’s sold today anyway. I wish I had more of it actually. This version had a lower Noack, less sulfated ash and a slightly higher HTHS number. I don’t think that this oil has “aged out” Do you seriously think that it’s going to damage my engine?
Carlostrece
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I heard 5 years motor oil storage is OK, but that's splitting hairs. I've had the same thought as you. I buy my oil within 1 month of use partly for the reason you mention, but also because I have limited storage space, and I consider the time value of money. Buying something on sale long before you need it is false economy because of the time value of money. However, buying something on sale within 1-2 months of using it is a win. IMO
Carlostrece
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It's the additives that eventually go bad in storage or use.
I’ve never heard they “go bad”. We’ve had reports of sometimes they will precipitate out, but I don’t know what mechanism would cause them to go bad.
Aren't they chemicals? How come things like toothpaste go bad then?
Carlostrece
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I only change my Buick's oil every 3 years because I only drive 400 miles a year and my car is stored in a heated garage, which means the coldest start it ever gets is 60F. Also, my car goes for one 30 min highway drive per month. As a result of those factors, my oil only has 1200 miles on it after 3 years, and it still looks and smells clean. When my valve covers were off recently (to replace gaskets) the valvetrain looks clean.
So my 3 year OCI has been working well for my situation. I'm considering increasing my OCI to 5 years.
Having said all that... I wanted the freshest oil possible when it goes into engine because it's going to be in the engine for years.
So my 3 year OCI has been working well for my situation. I'm considering increasing my OCI to 5 years.
Having said all that... I wanted the freshest oil possible when it goes into engine because it's going to be in the engine for years.
IIRC Lakespeed said the detergent can go bad from years in storage. He also mentioned oxidation and precipitation of additives. He showed visual examples and VOAs. I'm not a chemist. I'm just recalling what he said.
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And it should be decanted for several hours before use, so it can breathe.
“The detergent”. Okay.
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