Mixing Mobil 1
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4WD
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That’s one way to be somebody
You can just run the 0W-40, but no oil is going to stop HK engines from grenading. The ESP 5W-30 is not meaningfully thinner than the 0W-40. They are both 3.5 HTHS oils.
The only time I'd consider mixing oils is when you know the additive package is identical. For example, FS 0W-40 and FS X2 5W-50 can be mixed if so desired. Most of the time, we don't have that knowledge.
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The thing about Frankenbrews is that you are potentially trying to get oil together than is greater than the sum of its parts. Mixing across grades because you have something lying around is bad.
Shel_B
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When mixing oil formulations to get the benefits of each you often get the benefits of neither.
OVERKILL
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One of the things I learned from Dave at HPL is that different additive packages behave differently with different types, and volumes, of friction modifiers in terms of enhancing wear protection and reducing friction. So say a dimer/trimer moly blend top-treat is enhanced by a dash of tungsten in a Euro additive package, that same combo could actually perform worse than just straight-up trimer in an API-spec additive package (these are not real examples, just illustrating the point).
So, thinking you are "fortifying" the perceived neutered additive package of one oil, like say TGMO 0W-20 for example, by mixing it with M1 0W-40, which has a more robust additive package, may in fact produce a worse performing product than either of them by themselves.
It's one thing to mix two vanilla oils that use the same additive package and just different base oil and VII combos, like an API 0W-20 and 5W-30 to get a heavy 5W-20 for example. Redline used to say you could mix their white bottle oils in this manner because they all had the same additive package, though I think that's going back a ways now. It's quite another to mix oils with considerably different additive packages, where the potential for negative synergies is quite real and the odds of you producing something that performs better than either of the constituents, fantastically remote.
Exactly
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I wouldn’t worry about it, between the half to full quart of used oil that’s left in an engine during an oil change, and the fact that that as soon as you start that engine gas/soot/water/every other byproduct of combustion is entering that oil formula, all tossed to together in the ultimate mixer (the crankshaft spinning 2,000 times a minute at 200 degrees)…I’d say you’re not causing any harm.
This^^^ is the longest run on sentence I’ve ever wrote.
This^^^ is the longest run on sentence I’ve ever wrote.
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4WD
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This drove me to check the shelves - and thinking of two rules of thumb seen here often. Stay with brand and stay with grade.
I have Valvoline in quart bottles that are all 10W30.
2 are full synthetic HM
2 are semi in HM (these are only $6, so two more is doable)
1 is VR-1
So who thinks that mix will cause issues in a Pentastar for 5k?
(and no, my OPE has plenty of stash)
I have Valvoline in quart bottles that are all 10W30.
2 are full synthetic HM
2 are semi in HM (these are only $6, so two more is doable)
1 is VR-1
So who thinks that mix will cause issues in a Pentastar for 5k?
(and no, my OPE has plenty of stash)
since its impossible to know its easy to say no bad results or "show me the issues" none of which are immediate or critical.
but that is the kind of slop I would run in a briggs mower not a car.
That being said the engine only requires 5w20 semi syn with a weak mopar oil spec..
While not recommended will it cause any issues.. probably not ... immediately anyway.
I can’t take credit for the above oil brew but I believe this and maybe other brews posted here worth a glance .
Forgive the spelling- but what about the former “Cateran” oil blend popular here for Toyota owners - quite a few members here liked it . No matter , I don’t blend and will most likely continue with M1 5W30 EP or M1 0W30 ESP oils .
Patman
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You are thinking about the member Caterham and he hasn’t been here since 2020.
OVERKILL
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Yes, the "CATERHAM blend" which I was always vocally critical of, if you recall for the same reasons I've outlined in this thread.
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I think you will be OK, I’ve mixed oil all of my life in several variations and weights, I changed the oil today in my Jeep. I mixed Mobil one with Lucas and added Lucas oil additive.
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Shel_B
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Did you complete the oil change? I see no mention of Marvel Mystery Oil.
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I’ve got Marvel mystery oil in my shop, but I’ve never really used it. It’s more of an engine flush some like it some don’t . I don’t really use it.
Back in the old days, I’m 59 soon, they recommended it for a motor flush and they even sold motor flush in a quart can, I remember the old paper cans with metal ends, and then people used transmission fluid, it was always a motor flush, but someone would always say it would make your engine use oil.
Why would you adulterate a good oil like that?
I hear Triax is looking for a blender.
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Maybe he's still here in one iteration or another.
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