This is the first winter ive had my 8 and i was wondering if i should change the oil even though the oil is only 900 miles old.

my car has 75k miles on it i am using royal purple 10w30

i am also worried because it is acting wierd with my shifting whens its cold is that normal?

 

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10w30 is fine for northern CA winter driving. The 10w indicates it's good down to 10 degF and you won't be anywhere near that unless driving in the mountains.

Transmission/differential fluid is a bit sluggish until it warms up. Be happy you don't live in a truly cold climate where it gets like molasses!

 

If I might be so bold as to dispute that... The 10w means it has a viscosity of 10 at low temperatures. It's good to lower temps. Mazda says that the various 10wXX's are suitable for ambient temps down to -20 degF.

Ken

 

^ And I shouldn't have been so bold as to use the simple layman's concept with such an astute membership.

 

Yep...that's us. A bunch of *** toots.

Ken