One more question:
Is 10w40 too thick for Seattle?
Car is always garaged overnight so in the night it never gets under 50F
During day I park in underground parking.. so I don't think gets under 32F too often...
And in Seattle there is very rarely sub freezing temperatures..
I'm asking because I cann't find 5w40 anywhere and local Napa store has 10w40 for 7$ quart
and closest wallmart/Advance Auto.. is 1hr away from me
Thanks
Sasha