Like when I do a oil change. Drain it, then start the engine for 5 or 6 secs then shut down to get more oil out of the system IE oil pump, journels in the block, what is left in filter. Usually about 1/2 to 3/4ths of quart will come out of the drain hole very pronounced. Been doing that for decades also with no ill effects.
YMMV.... But it is what works for me. 👍👍👍
Had one vehicle that I would spin a new filter on and fill up with diesel, run for a few minutes and then drain and fill with regular oil and a new filter.
I use that engine flush every 3rd or 4th oil change Very light like a fuel based liquid Wally world stuff. 1 qt added to oil cold engine Run five mins drain
Supposed to dissolve sludge in bottom of pan. clean out journals
Kinda like the diesel way you said.
Rene, 1 qt of diesel added to the oil?
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