This past fall I did a drain and fill of Amsoil Severe Gear 75W-90 in my 5 speed Mazda 6. Last week when the temps got down to -40˚ the gear shift and transmission became like the Sword and the Stone... immovable.
The shifter didn't begin to move again (side to side in neutral) until temps "warmed up" to above -33˚C. I couldn't attempt to engage a gear until above -30˚C. Driving at -30˚C didn't occur until I had warmed up the engine for ten minutes.
Are there any manual GL4/GL5, 75W-90 fluids that will do better at these arctic temperatures?
The shifter didn't begin to move again (side to side in neutral) until temps "warmed up" to above -33˚C. I couldn't attempt to engage a gear until above -30˚C. Driving at -30˚C didn't occur until I had warmed up the engine for ten minutes.
Are there any manual GL4/GL5, 75W-90 fluids that will do better at these arctic temperatures?