I've heard of people using Marvel Mystery oil to cut a heavier 30 or 40wt oil into a lighter 30 for winter for instance, from what I have read Rotella oils are thick for their respective grade, anybody have suggestions on how to turn a gallon of Rotella t5 10w30 into a lighter 5w30 and assuming it's with MMO, can it last an entire OCI of 6-7K miles? Thanks
Rotella T5 10w30 syn. blend,how to make it a 5w30?
- Thread starter zach1900
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Make sure you vehicle is operated in weather temps above 0 degrees, itll be just like 5w30
Here's what the Pennzoil team said on nearly that exact question...
Quote:
16. I'm interested in making a custom blend for my vehicles. Preferentially starting with Rotella T6 5W-40, as it's in the family, but wanting something a bit closer to 5w30. Rotella as it's in the family, and a strong oil, but if needed, Platinum Euro 5W-40 could be considered as a starting point. I would like to blend it down to a 5w30 using Platinum 5W-20, so that I will end up with a 5w30 with a little more anti-wear additive than the typical 5w30. Are there any problems doing this, and will the results be as I expect them to be?
A. The physical results may be very much as you expect i.e. viscosity is likely to be predictable following well known physical laws however the chemical effects are highly unpredictable. Wear performance is not dictated solely by the amount of wear protecting additives in an oil, the efficacy (effectiveness) of the additives must also be considered. Efficacy can be negatively impacted by changing the balance of a formulation package. The approach you suggest could conceivably result in poorer performance, I would recommend choosing a single tier of product, and Pennzoil Platinum has been designed to offer complete protection including unsurpassed wear performance.
If you are committed to it, then use a 0W20 engine oil, so it at least carries some additives into the blend.
As an aside, Rislone in SAE30 does improve it's flow characteristics some at -20C.
Quote:
16. I'm interested in making a custom blend for my vehicles. Preferentially starting with Rotella T6 5W-40, as it's in the family, but wanting something a bit closer to 5w30. Rotella as it's in the family, and a strong oil, but if needed, Platinum Euro 5W-40 could be considered as a starting point. I would like to blend it down to a 5w30 using Platinum 5W-20, so that I will end up with a 5w30 with a little more anti-wear additive than the typical 5w30. Are there any problems doing this, and will the results be as I expect them to be?
A. The physical results may be very much as you expect i.e. viscosity is likely to be predictable following well known physical laws however the chemical effects are highly unpredictable. Wear performance is not dictated solely by the amount of wear protecting additives in an oil, the efficacy (effectiveness) of the additives must also be considered. Efficacy can be negatively impacted by changing the balance of a formulation package. The approach you suggest could conceivably result in poorer performance, I would recommend choosing a single tier of product, and Pennzoil Platinum has been designed to offer complete protection including unsurpassed wear performance.
If you are committed to it, then use a 0W20 engine oil, so it at least carries some additives into the blend.
As an aside, Rislone in SAE30 does improve it's flow characteristics some at -20C.
And if you're simply thinning an oil with MMO, whether or not that's ill advised, your results in cold cranking would be difficult to predict. It might work, but we stopped cutting monogrades with kerosene for a reason. I'd never spoil a perfectly fine 10w30 Rotella. They're thick for their grade because their specification (CJ-4) calls for a higher HTHS.
I've also heard of people running 10w30 over the winter.
This was the go to grade for most engines in this country until the thinner oil movement began with GM recommending 5w30 for most of its engines back in the mid 'eighties.
I'd either run the oil as it comes out of the jug or reserve it for warm weather use.
This is a good oil and I'd not want to compromise its formulation in ways that none of us can really know.
This was the go to grade for most engines in this country until the thinner oil movement began with GM recommending 5w30 for most of its engines back in the mid 'eighties.
I'd either run the oil as it comes out of the jug or reserve it for warm weather use.
This is a good oil and I'd not want to compromise its formulation in ways that none of us can really know.
You can't turn 10w30 into 5w30. MMO has doubtful cold flow properties, and if somehow you get an oil that has the cold properties of a 5w, you probably won't have a 30 grade at operating temperature. And MMO will wreck the anti-wear, detergency, and friction modifier characteristics of the original oil.
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