Cheap Oil for Multiple Flushes
- Thread starter TallPaul
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What happens to all the heavy metals in the oil? Do they end up in the air?
The oil's capacity to suspend contaminants would not really matter for a 5 mile flush. Basically you want to get everything rinsed off and then drop it out the bottom of the pan. (In that respect, I guess I should remove the Fram Sure Drain for a quick drain.) But I don't think the oil would degrade that quickly.
Every once in a while i will run a very short interval oil change as a "flush" which i dont think is a bad idea. Usually its the result of my experimenting with an oil, not being happy with it, and dumping it after 1000 miles.
Having said that, if doing it at every oil change, i would be curious if any benefits done by rinsing would be outdone by the added stress of 2 dry-cranks every oil change instead of just one.
If you have an oil that you like and you stick with it, i would think just shortening your OCI would be a better all around solution that the 'rise' on every oil change.
Having said that, if doing it at every oil change, i would be curious if any benefits done by rinsing would be outdone by the added stress of 2 dry-cranks every oil change instead of just one.
If you have an oil that you like and you stick with it, i would think just shortening your OCI would be a better all around solution that the 'rise' on every oil change.
If the oil's ability to suspend contaminants doesn't really matter, that then begs the question:
Why bother?
You can't really expect all the garbage to drain out of the pan, without the oil picking up a good load.
Why bother?
You can't really expect all the garbage to drain out of the pan, without the oil picking up a good load.
Added stress? Bet it's no greater than a cold startup. At night, the oil drains down to the pan anyway, and the flow is the same regardless. In both cases, you're relying on the AW agents deposited on all surfaces to protect them till the oil flows. Something tells me too much is made of the "dry" startup after OC.
My
Maybe we are talking two different things. I was more thinking of dispersency, which would be important during the OCI, but I don't think is important to the drain off. I would think any loose crud would rinse off like hosing dirt off a shovel.
I did this to an old diesel I bought that I did not know the history of the OCI's. I flushed 4 gallons (2 flushes) of cheap $.84 per qt 20w-50 thru it. It came out just as black as the old oil, so it must have picked up something. On the third try I left it in for 1000 miles and it did indeed look cleaner on the dipstick.
Who knows? It will probably not help pick up wear metals, but loose sludge and soot, probably.
Who knows? It will probably not help pick up wear metals, but loose sludge and soot, probably.
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