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Can you mix gear oil with transmission fluid?
When different types of oils and greases are mixed together, it can spell disaster for machinery. This is why it’s best to avoid mixing lubricants. For example, if you mixed 1 gallon of automatic transmission fluid (ATF) with 300 gallons of gear oil from the same mineral group, the dilution would hardly be noticeable.
Is gear oil the same as ATF?
Gear oil is also thicker than ATF because it serves mainly to lubricate the gearbox, transfer cases, and differentials. ATF does not have the thick lubrication qualities needed in a manual gearbox, and gear oil does not contain all the additives needed to smoothly run an automatic transmission.
What happens if you put gear oil in transmission?
Whilst some manual gearboxes do use transmission fluids in place of gear oil, the same cannot be said for putting gear oil into an automatic transmission. Gear oil is much too viscous for these systems and will cause clogging between components.
Can you mix different gear oils?
Mineral oils, PAOs and esters may all be mixed together. Only polyglycol type synthetic oils (PG or PAG) may not be mixed with the other lubricant types. They can react together and form gum gels in the casings.
What viscosity is ATF?
ATF III – Mineral automatic transmission fluid
| Temp. [°C] | Dyn. Viscosity [mPa.s] | Kin. Viscosity [mm²/s] |
|---|---|---|
| 40 | 30.31 | 35.55 |
| 50 | 21.53 | 25.44 |
| 60 | 15.93 | 18.97 |
| 70 | 12.18 | 14.62 |
Can I use ATF for manual transmission?
If you drive a vehicle with a stick shift, you might wonder if automatic transmission fluid will work in your manual transmission. You might wonder if you can use Dextron-III/Ford Mercon multipurpose automatic transmission (ATF) instead of motor oil. The answer is a qualified, “Yes.”
Can you put ATF in a CVT transmission?
The most common situation where the wrong transmission fluid is used is in the case of using automatic transmission fluid in place of variable transmission fluid and vice versa. Adding ATF to a to a CVT will eventually result in the death of your transmission.
Is it bad to mix diff fluid?
You won’t have any problems. When the dealer changed the front axle seals they put 80w-90 back in and that is when I found out. They said it will not hurt to switch back and forth between different types of diff fluid.
Can you mix same weight gear oil?
Don’t mix, the different additive packages can react!