I think that I may have been a little bit misunderstood. I am not trying to solve any internal problems at this time.
My questions were based on wonderings about the effects of an IT vs long haul driving.
Based on cumulative responses, it is now my understanding that one can achieve IT results by simply putting the car on the road with a little spirited driving, and a few hundred miles under your belt.
At times when I have done the IT, I try to maintain a watchful eye on my rear view mirror, because I’m looking for bursts of black smoke (soot) from the exhaust. There have been many times that I’ve seen no evidence of exhaust soot, and ended up driving on thinking about how much fuel I’ve just waisted. LOL
These newer diesels like I have in my F350 have a regeneration process built in. When that kicks in, it starts dumping a ton of diesel to clean the cats. The problem with that system is, it’s electronically controlled, and on a timer. I’ve timed it, and I guess depending upon what’s happening, that thing will dump fuel for at least 10 minutes, and once in a while I’ve seen it run for 20 minutes. Talk about a hit in the tank! If unlucky enough to get caught in a regen cycle while running an errand (lets say to the supermarket), the system will restart the process every time the engine is restarted, because the cycle was interrupted. I find that when running around town without having completed a cycle, the truck really starts to run like $(!@. Taking off from a light with billowing grey/black coming from the exhaust is embarrassing, and not my idea of a good time.
A.J.On Jun 28, 2011, at 9:49 AM, MGuar wrote:
In reply to a message from A.J. Simpson sent Mon 27 Jun 2011:
I suppose if you are absolutely certain that your rings are
working correctly and your oil has recently been changed I
agree there is no need for an oil change afterwards.
However to be on the safe side perhaps you need to do a
leak down test to confirm. A leak down test unlike a
compression test will tell you where the problem is… If you
hear the air escaping out the intake you understand you have
a leaking intake valve. If you hear the air leaking out the
exhaust it’s a bad exhaust valve but if you hear the air
escape at the breather, (I’m lazy I use the oil filler cap)
You have a ring problem.
The good part of that is it will also tell you how bad it is!!
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