Mike Behnke wrote:

> In addition to running a HQ synth, adding 8 ounces of Marvel Mystery
> Oil at oil change and 500 miles or so before changing oil also helps.
>
> 70K miles on my 2.7L '00 'Trepid and no indication of sludge buildup or
> noise from the timing chain. 32+ MPG on the highway. Steady diet of
> 5W30 Mobil1 and a Purolator PureOne oil filter every 3K miles.

210,000 kms on my 2000 2.7l, running strong, no apparent signs of
sludge. Always changed the oil at 5000 kms w/ filter, switched to
synthetic last summer. Hope (plan) to get another 200,000 kms out of it.