5 or 10w30 in the summer?

[thebear54]

I personally use the Mobil 1 synthetic year around...never had a problem and it's recommended by Isuzu mechanics (not that that fact means a lot, but...).
It works well here where we also have drastic temp changes.
Been dying to try that Mobil 5000...keep us posted on any changes if you do try it.
John

[V12BMW]

im gonna use the mobil1 5000 but i just dont trust it enough to keep it in for 5000miles. So i will continue to do my 3000 service intervals. So was that 5 or 10w30?

[mbeach]

I used to use 10 in the summer, and 5 in the winter.

They are easier to find than the 0W30 that my local Isuzu techs recommended to me.

I wouldn't worry about the Mobil 1 making it over 5000 miles, I'd worry about the motor. If you don't notice any consumption, and if you drive under normal circumstances, 5000 miles should be a piece of cake.

[transio]

I use 10w30 year-round in Miami.

[V12BMW]

Thanx for the help fellas I try the 10w

[thebear54]

LOL...you guys in Miami don't have to put up with b**l freezing weather in January but you do have the super warm in July/August. (Man, I miss Florida)
I found 10w Mobil 1 still works great all year up here in the freezing North too.
Have used it for years in all my Isuzus, with no problems at all.
John