What is so wrong.....
- Thread starter whizbyu
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Its not wrong, they are all compatible. There is the theory that due to the different add packs, that you may have no solid add pack. Just several different components that are diluting each other.
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Nothing? I've done it before.
Mixing oils though, in general, you get a worse oil then whatever you started with. Generally its smarter to use one oil thats been chemically designed to be a complete package, not mixing parts together.
Mixing oils though, in general, you get a worse oil then whatever you started with. Generally its smarter to use one oil thats been chemically designed to be a complete package, not mixing parts together.
to OP:
The way you word your question/posting is what makes oil "mixing" such as negative impression.
Q.
The way you word your question/posting is what makes oil "mixing" such as negative impression.
Q.
Its OK to mix oils. I do it all the time just to get rid of various closeout oils.
I do it all the time when I am topping off.
I've never SEEN an issue.
There were UOA's in the past of 5 different brands of oils mixed for one 5,000 OCI. When compared to other UOA's you really didn't see any change in wear metals.
Could there be a negative effect to that additive package?
Maybe.
Then again maybe not.
I've never SEEN an issue.
There were UOA's in the past of 5 different brands of oils mixed for one 5,000 OCI. When compared to other UOA's you really didn't see any change in wear metals.
Could there be a negative effect to that additive package?
Maybe.
Then again maybe not.
JHZR2
Staff member
Not wrong. But theoretically some additives can clash and come out of solution. I've not seen this myself. Not sure if/who has. It may be a holdover from other lubes.
Once we were working on a site that had used grp I r&o lubes in their gas turbine generators. An option for grp II lube came up, but the lube company advised against due to additive solubility.
Once we were working on a site that had used grp I r&o lubes in their gas turbine generators. An option for grp II lube came up, but the lube company advised against due to additive solubility.
I see no issue mixing oils of the same line to make a custom formulation. Such as Mobil 1 0w-40 with the AFE 0w-20 to try and achieve a certain hths level,since we cannot attain the AFE 0w-30 through regular channels.
Or perhaps red lines 0w-40 with their 20 grade,again to achieve something that cannot be purchased.
Mixing different brands with different additive packages won't hurt anything however I don't think it's optimal.
Oil companies spend alot of money formulating oils. They employ people alot smarter than me,that figure out stuff in the realm of parts per million,so I'm not even going to attempt to fool myself into thinking I know better than them.
Sometimes I'll add an oil additive but even that has become rare.
I just take the opposite side of skyship so I can call him out.
Or I'll use a flush type product. Usually seafoam to run through the vacuum lines just so I know for sure their clean. I'll use it in the crankcase to address an issue but if their isn't a problem there is no point trying to create one.
Good oil can do alot but neglect and abuse can necessitate the need for a product other than just oil.
But back on point mixing different brands blindly isn't optimal in my opinion but I doubt it will do any real harm.
API certified oils are formulated to all be compatible. Additive clash is not possible when using an API stamped oil. Once you get out of the API realm there is the very real possibility of some brands not being compatible however I'm sure to be API certified the product has to be compatible with all other API certified oils.
Or perhaps red lines 0w-40 with their 20 grade,again to achieve something that cannot be purchased.
Mixing different brands with different additive packages won't hurt anything however I don't think it's optimal.
Oil companies spend alot of money formulating oils. They employ people alot smarter than me,that figure out stuff in the realm of parts per million,so I'm not even going to attempt to fool myself into thinking I know better than them.
Sometimes I'll add an oil additive but even that has become rare.
I just take the opposite side of skyship so I can call him out.
Or I'll use a flush type product. Usually seafoam to run through the vacuum lines just so I know for sure their clean. I'll use it in the crankcase to address an issue but if their isn't a problem there is no point trying to create one.
Good oil can do alot but neglect and abuse can necessitate the need for a product other than just oil.
But back on point mixing different brands blindly isn't optimal in my opinion but I doubt it will do any real harm.
API certified oils are formulated to all be compatible. Additive clash is not possible when using an API stamped oil. Once you get out of the API realm there is the very real possibility of some brands not being compatible however I'm sure to be API certified the product has to be compatible with all other API certified oils.
Originally Posted By: whizbyu
about "mixing" different brands of oil? I can never understand why.
In general, all oils are supposed to be compatible in the application for which they are designed, and mixing is most unlikely to cause anything in the way of problems...maybe not benefits, but no problems.
Have seen and done tests on Turbine oils where the blends of two different manufacturer's turbine oils being better as a blend (any blend) than either oil on it's own.
about "mixing" different brands of oil? I can never understand why.
In general, all oils are supposed to be compatible in the application for which they are designed, and mixing is most unlikely to cause anything in the way of problems...maybe not benefits, but no problems.
Have seen and done tests on Turbine oils where the blends of two different manufacturer's turbine oils being better as a blend (any blend) than either oil on it's own.
Originally Posted By: JHZR2
Once we were working on a site that had used grp I r&o lubes in their gas turbine generators. An option for grp II lube came up, but the lube company advised against due to additive solubility.
Yep, when they changed basestock (without telling the market), it lead to real difficulties with the GrI/II add pack not playing nicely.
Once we were working on a site that had used grp I r&o lubes in their gas turbine generators. An option for grp II lube came up, but the lube company advised against due to additive solubility.
Yep, when they changed basestock (without telling the market), it lead to real difficulties with the GrI/II add pack not playing nicely.
Originally Posted By: spasm3
Its not wrong, they are all compatible. There is the theory that due to the different add packs, that you may have no solid add pack. Just several different components that are diluting each other.
If they dilute or counteract each other then they are NOT compatible.
Its not wrong, they are all compatible. There is the theory that due to the different add packs, that you may have no solid add pack. Just several different components that are diluting each other.
If they dilute or counteract each other then they are NOT compatible.
MrQuackers
Site Donor 2025
I want to mix G-Oil with MS5K 50/50
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