Oil for summer?????

[alain]

What kind of oil do you use for summer and winter. Here the temp can go down to -35 celcius or -30 f.

[Rock Doctor]

Amsoil Synthetic 10w/30 for summer and winter in the engine and 80/90 synthetic in the Trans ((Conquests)

RD

[thorn]

I use Mobil 1 5w-30 in my Conquest in the winter and Mobil-1 75 w-90 in tranny.

[plott hound]

I use 10w-30 shell rotella synthetic all year round.

[onefunzr2]

Since my 18hp Vanguard is kept in a heated garage, I use Quaker State full synthetic 10w-30. It worked well last year when in the winter I plowed snow almost every other day. So I saw no reason to change. I change oil and filter every year regardless of temps or amount of usage.