At my last oil change, almost 6k ago, I switched from a 5w30 conventional to Mobil 1 5w30. Would it be a good or bad idea to use Mobil 1 10w30 in the summer and go back to using 5w30 in the winter?
Switching Mobil 1 viscosities
- Thread starter iontrap
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Patman
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No problem at all, I used to switch back and forth between 5w30 Mobil 1 in winter and Mobil 1 10w30 in summer myself. My father still does this in his car too.
Living in Georgia, you could run either one all year round if you liked.
Patman
Staff member
That's true also. If it rarely goes below freezing there, just stick with 10w30.
We have seen really good posts for the 10w30. I have been using the 10w30 Amsoil and Mobil for 10 years in Pa all year round. Starts right up in -20F with vehicle outside. I wouldn't even consider 5w30 in Ga.
It looks like I'll go with the 10w30.
Thanks for all of the replies.
Thanks for all of the replies.
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