Jim M wrote:
> With that type of driving, I'd feel guilty doing 2,500 miles between oil
> changes. I believe automotive engines need to fully warm up on a regular
> basis to allow the oil to burn-off the raw gas that gets down the cylinder
> walls during cold operation.
I believe that's part of the sludge problem with 9-5s. It was designed for
efficiency on long runs not short ones.
Graham