I don't have sludging problems. Maybe my oil, filter and maintenance
combinations work. I don't use Pennzoil. Here's one oil that creates sludge.
I've seen it sludge up rebuilt engines in no time. I just can't bring myself
to buy a foreign manufacturer's vehicle.

Larry
Unlock the Universe

"toyota1" > wrote in message
lkaboutautos.com...
| larry, the problem with the 2.7 is that the oil pickup and passages in the
| cylinder heads are too small and it causes a large amount of sludge to
| form, thus reducing the oil flow to the top end, and damaging timing chain
| and valve train. as these are an interference engine, if the timing chain
| breaks, pistons hit valves, and so on.. ive seen 2.7s with 40k miles on up
| to 120k miles fail. it all depends on the maintenance of the vehicle.
sorry
| you feel that way about toyotas, but my truck with 200k miles and original
| engine, etc, is much more impressive than my dodge intrepid 2.7 that
| failed with 45k miles on it, and my dodge truck (used to have) that the
| transmission failed at 70k, and both had had oil changes done every 4k
| miles since new, trans fluid flush every 25k. it now has a 3.2 with almost
| 20k miles and is running perfectly.
|