I mixed m1 and pp both 10w30 today. 5 qts of m1 and 1 qt of platinum. Did i make a mistake? Im sure the base oils should be similar.
Mixing oils
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OVERKILL
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Which M1? And why would you assume the base oils should be similar? I doubt you'll notice anything adverse, was this just to use up spare quantities of both?
It was regular mobil 1. I had a opened jug of pennzoil for top up i thought i would help finish it off.
I had read on here that some mobil 1 varieties use gtl.
Engine won't know the difference. Sleep well.
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Originally Posted by Spitter
I mixed m1 and pp both 10w30 today. 5 qts of m1 and 1 qt of platinum. Did i make a mistake? Im sure the base oils should be similar.
Everything under the hood is fine. Keep on keeping-on. You hurt nothing whatsoever. It's all compatible.
I mixed m1 and pp both 10w30 today. 5 qts of m1 and 1 qt of platinum. Did i make a mistake? Im sure the base oils should be similar.
Everything under the hood is fine. Keep on keeping-on. You hurt nothing whatsoever. It's all compatible.
You didn't hurt a thing I wouldn't do a 15K OCI out of the chute but I would lose sleep.
It wont be left in but 2 months and 3k miles. I do some very severe driving so i stick to 3k syn i got on rebate.
OVERKILL
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Originally Posted by Spitter
It was regular mobil 1. I had a opened jug of pennzoil for top up i thought i would help finish it off.
Yep, that's a reasonable enough reason to do it.
It was regular mobil 1. I had a opened jug of pennzoil for top up i thought i would help finish it off.
Yep, that's a reasonable enough reason to do it.
Not an issue at all.
Just to broaden the topic- what about mixing, in general, a conventional and a full synthetic?
( in my case I'm considering mixing Yamalube 10w-30 conventional with Yamalube 5w-30 syn in my F300 )
No hijack intended, just curious in general about mixing types.
( in my case I'm considering mixing Yamalube 10w-30 conventional with Yamalube 5w-30 syn in my F300 )
No hijack intended, just curious in general about mixing types.
Last edited:
Originally Posted by noclutch
Just to broaden the topic- what about mixing, in general, a conventional and a full synthetic?
( in my case I'm considering mixing Yamalube 10w-30 conventional with Yamalube 5w-30 syn in my F300 )
It will mix. The end result will be anyone's guess though.
Just to broaden the topic- what about mixing, in general, a conventional and a full synthetic?
( in my case I'm considering mixing Yamalube 10w-30 conventional with Yamalube 5w-30 syn in my F300 )
It will mix. The end result will be anyone's guess though.
As long as you mix same weight oils I'm sure it's fine. Even mixing grades in a pinch won't hurt anything. Synthetic or conventional and everything in between. I've mixed high mileage and synthetic with no adverse effects.
According to some, engine death is imminent.
According to the empirical evidence of many on this board, motor on and nothing even remotely undesirable will happen.
While I'm not a big fan of mixing, I've done it on occasion for the same reason that you did.
For a dead of winter run, there is at least some evidence that you shouldn't, but for a warm weather run, no harm, no foul.
OTOH, a real blender who posts here, SOJ, has written that a 0W-xx is always that without regard to a mix of different 0W oils.
Who am I to question that?
According to the empirical evidence of many on this board, motor on and nothing even remotely undesirable will happen.
While I'm not a big fan of mixing, I've done it on occasion for the same reason that you did.
For a dead of winter run, there is at least some evidence that you shouldn't, but for a warm weather run, no harm, no foul.
OTOH, a real blender who posts here, SOJ, has written that a 0W-xx is always that without regard to a mix of different 0W oils.
Who am I to question that?
Originally Posted by fdcg27
According to some, engine death is imminent.
According to the empirical evidence of many on this board, motor on and nothing even remotely undesirable will happen.
While I'm not a big fan of mixing, I've done it on occasion for the same reason that you did.
For a dead of winter run, there is at least some evidence that you shouldn't, but for a warm weather run, no harm, no foul.
OTOH, a real blender who posts here, SOJ, has written that a 0W-xx is always that without regard to a mix of different 0W oils.
Who am I to question that?
Here's another blender who used to frequent the site
According to some, engine death is imminent.
According to the empirical evidence of many on this board, motor on and nothing even remotely undesirable will happen.
While I'm not a big fan of mixing, I've done it on occasion for the same reason that you did.
For a dead of winter run, there is at least some evidence that you shouldn't, but for a warm weather run, no harm, no foul.
OTOH, a real blender who posts here, SOJ, has written that a 0W-xx is always that without regard to a mix of different 0W oils.
Who am I to question that?
Here's another blender who used to frequent the site
bobbydavro said:
Every time you change your oil and go with a different brand you are MIXING. There is always a fair amount of oil left in the engine. Nothing bad ever happens ...
Originally Posted by geeman789
Every time you change your oil and go with a different brand you are MIXING. There is always a fair amount of oil left in the engine. Nothing bad ever happens ...
"ever" is the wrong word...
It HAS happened and it can be disastrous.
There was a case where the OEM factory fill did not play well with the service fill of a fleet, and a bunch of engines were failed due to inability to pump, at what should have been quite reasonable temperatures.
https://www.sae.org/publications/technical-papers/content/2000-01-2942/
Quote
A significant deterioration in low temperature pumpability properties (as measured by the mini-rotary viscometer; MRV) was observed in certain commercial-quality engine oils in a taxi field test program. A detailed investigation demonstrated that contamination by carry-over of the factory fill oil in combination with oil aging was the cause of the marked deterioration in low-temperature pumpability properties; no evidence of new oil incompatibility was observed using industry-standard test procedures. A subsequent investigation identified a number of commercial ILSAC GF-2 quality engine oils which also caused large MRV viscosity increases when added in concentrations as low as 1 wt% to used engine oils. A root-cause evaluation established that low concentrations of certain viscosity index improvers caused large MRV viscosity increases when added to used oils. Results from this investigation suggest that a new industry standard may be required to ensure used oil compatibility over a lubricant's normal drain interva
Note the latter part...the miscibility ASTM only required that the oil can be mixed with 7 reference oils, heated, frozen, and thawed without splitting like salad dressing or blowing chunks....nothing more is offered with regard to any other parameter.
And that's new oil, not used.
Thus my P.O.V. is do not mix if you NEED the cold weather performance to be unaffected ... if you need a 0W, then don't mix...if you live where I do, have at it if you want to play oil chemist.
Every time you change your oil and go with a different brand you are MIXING. There is always a fair amount of oil left in the engine. Nothing bad ever happens ...
"ever" is the wrong word...
It HAS happened and it can be disastrous.
There was a case where the OEM factory fill did not play well with the service fill of a fleet, and a bunch of engines were failed due to inability to pump, at what should have been quite reasonable temperatures.
https://www.sae.org/publications/technical-papers/content/2000-01-2942/
Quote
A significant deterioration in low temperature pumpability properties (as measured by the mini-rotary viscometer; MRV) was observed in certain commercial-quality engine oils in a taxi field test program. A detailed investigation demonstrated that contamination by carry-over of the factory fill oil in combination with oil aging was the cause of the marked deterioration in low-temperature pumpability properties; no evidence of new oil incompatibility was observed using industry-standard test procedures. A subsequent investigation identified a number of commercial ILSAC GF-2 quality engine oils which also caused large MRV viscosity increases when added in concentrations as low as 1 wt% to used engine oils. A root-cause evaluation established that low concentrations of certain viscosity index improvers caused large MRV viscosity increases when added to used oils. Results from this investigation suggest that a new industry standard may be required to ensure used oil compatibility over a lubricant's normal drain interva
Note the latter part...the miscibility ASTM only required that the oil can be mixed with 7 reference oils, heated, frozen, and thawed without splitting like salad dressing or blowing chunks....nothing more is offered with regard to any other parameter.
And that's new oil, not used.
Thus my P.O.V. is do not mix if you NEED the cold weather performance to be unaffected ... if you need a 0W, then don't mix...if you live where I do, have at it if you want to play oil chemist.
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