15w40 for 125k good or bad?
- Thread starter slowride
- Start date
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Based on my experience it is highly unlikely that running a 15W oil would hurt any engine.
Yes cold oil flow is important however a 15W will cushion the bearings during a cold start. The main reason for the low viscosity oils it to improve fuel consumption when cold.
For the next 200k miles I would be way more worried about the $40,000 that I would be spending on gasoline!
Cheers
Jim B
Yes cold oil flow is important however a 15W will cushion the bearings during a cold start. The main reason for the low viscosity oils it to improve fuel consumption when cold.
For the next 200k miles I would be way more worried about the $40,000 that I would be spending on gasoline!
Cheers
Jim B
bigdog9191999
Full Access Member
I wouldn't worry too much about it really, there is a good chance they ran it because once running it was used and ran consistent ( either highway or idle) I have run some rotella in several of my vehicles (15-40 t5 or t6) as well as my motor cycles. as long as it was changed regularly it should go for a long time.
SnowDrifter
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OK sounds like it probably wouldnt have hurt anything then. I do remember seeing something about one of the cats having been replaced like somebody mentioned before, not sure if that was related to the oil type or what though
bigdog9191999
Full Access Member
the oil has nothing to do with the cats unless there is something else major wrong
