Red Line 75W90 Gear Oil

[Dave Longley]

I believe 'esters' amongst other things(?) are used to expand seals, if necessary, like regular oil and hopefully prevent any leakage. Is this the case and does anyone know if Red Line 75W90 synthetic uses esters in their formulation?
I just started using their 'MTL' in an old Jag Moss box with new seals and no problems so far. Regards, Dave

 

[M3 Mitch]

I think most all of Redline's oils are ester based.

I have not had any seal problems using Redline diff oil in either a 65 GMC half-ton or in BMW cars.

 

[neo3]

Does this mean if I switch from RL to something else that seals will shrink? (I'm using RL in both trans and diff.)

 

[MolaKule]

No, non-majority synthetics or mineral oils have their own seal-swell additives.


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