I am changing the front differential fluid in my 98 Expedition.
The spec calls for 75W90 Gear Lube.
The 2 brands I commonly use are Synthetic Valvoline and Mobil 1. Both have friction modifiers added.
Would that be a problem for the front differential?
I also saw a Lucas brand Trans and Diff Lube, that didn't say anything about friction modifiers, but did have additives.
"Lucas SAE 75W-90 Synthetic Gear Oil is a non-foaming, super slick, long lasting lubricant designed especially for heavy duty or high performance applications where other gear lubricants just aren't good enough. Contains a special additive package that cushions gears and resists "squeezing out" under extreme pressure situations where other gear lubricants just aren't good enough. Specially designed to stand up to high temperatures without losing its lubricity."
Recommendations? Everything else without additives or friction modifier seems to be a store brand
The spec calls for 75W90 Gear Lube.
The 2 brands I commonly use are Synthetic Valvoline and Mobil 1. Both have friction modifiers added.
Would that be a problem for the front differential?
I also saw a Lucas brand Trans and Diff Lube, that didn't say anything about friction modifiers, but did have additives.
"Lucas SAE 75W-90 Synthetic Gear Oil is a non-foaming, super slick, long lasting lubricant designed especially for heavy duty or high performance applications where other gear lubricants just aren't good enough. Contains a special additive package that cushions gears and resists "squeezing out" under extreme pressure situations where other gear lubricants just aren't good enough. Specially designed to stand up to high temperatures without losing its lubricity."
Recommendations? Everything else without additives or friction modifier seems to be a store brand