I've finished the ARX procedure and now have M 1 10w30 running in the truck ('93 V6 w/ 116K). I've been reading that the 5w's are showing good wear #s and since M1 10w30 is almost a 5w and I've had no problems:
1. Should I consider a 5w for a future oil?
2. Better mpg?
3. What about going Delvac1 5w40?
4. Manual states:5w30 for 55*F or below, 10w30
for 0*F to beyond 100*F...CAFE hype?(if not, I
guess the above questions are answered).
Climate:~10 freezes per year, ~105-115*F summer (AZ).
I drive around 10-12K per year. %80 city.
The reason I threw the DV1 in there was I've read here its a very long lasting oil and cleans well. If it would go the full year, I'd just switch the filter halfway. Just a thought.
Thank you.
Toy4x4
1. Should I consider a 5w for a future oil?
2. Better mpg?
3. What about going Delvac1 5w40?
4. Manual states:5w30 for 55*F or below, 10w30
for 0*F to beyond 100*F...CAFE hype?(if not, I
guess the above questions are answered).
Climate:~10 freezes per year, ~105-115*F summer (AZ).
I drive around 10-12K per year. %80 city.
The reason I threw the DV1 in there was I've read here its a very long lasting oil and cleans well. If it would go the full year, I'd just switch the filter halfway. Just a thought.
Thank you.

Toy4x4