Not a problem for the residual oil to mix with the MT. I run the stuff
in my van.

I recommend that you change the tranny oil every two years. These oils
are made of chines of molecule  and over time the chains get broken up.
As that happens they slowly lose their ability to cling to the gear
surfaces, so you lose the wear protection over time.

John Rodgers
88 GL Driver

Charlie Swanson wrote:
> Here's my question:
>
> When you switch from dino to MT90 does the old stuff
> that you can't get out mix OK with the synthetic?  Or,
> is there a way to get everything out?
>
> Thanks in advance,
>
> Charlie Swanson
>
>
>
> Semper Ubi Sub Ubi
> 85 GL
>
>
>
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