Was just wondering if anyone runs 15-40 in any of there trucks. Mine is a 1991 302 and burns oil was thinking of going with that.

 

I know quite a few guys who do. I run 10W30 with a bit of Lucas oil stabilizer. Mine doesn't burn any, but if it did, I'd likely make the switch.

 

I know many members do. What oil are you using now ItsAFord55?

How much oil are you burning?

 

I'm running straight 30 now, and I'm burning probably maybe a quart or 2 between oil changes.

 

Going to 15-40 should be fine then. I've run 10w-40 in the two 351's I've owned and both went past 200k miles without a problem. Never got to burning any oil, just started getting rear main seal leaks after about 180k.

If you live where it's warm enough that you can run straight 30 without having to worry about cold start issues, 15-40 wont give you any problems.

 

I run shell rotella t 15-40 in the 4.9.

 

Post your location.

If its not too cold where you are 15-40 will be fine.

 

I'm in Tampa so yea cold really isn't a problem lol

 

i run valvoline all fleet 15-40 in everything i own for the past 30 years.

 

I used to run 20-50 in a 300 because it was leaking a quart a day. It ran fine, but cold(winter cold) starts were a pain.

 

I live in iowa and I run 15-40 diesel oil in my 95 f150 that's jt cause we get it cheap and it has more detergents In it