Hi all bearded and non bearded old timers! Can I use the oil psi to pump out oil? Then for every quart pumped out I can refill from top - or should I just do conventional drain/refill? I got a 4 banger at the shop i rebuilt (bored er out on the old van norman 20 over) - unfortunately she wiped a cam lobe so replaced with good used (yes matched lifters). Tried doing a quicky on er buy just dropping oil pan and removing rod bearings and a good crank case clean etc - but she had more metal coming thru so tore here down COMPLETELY last week. Spent the whole today meticulously cleaning the lot - the oil pan alone took about 10 washes before the glitter was gone. Same with block, heads etc - removed the oil galley plugs, cam plug, removed head, oil pump, EVERYTHING got cleaned with gas and checked 4 times (im SUPER meticulous). After running for 10 mins this even im so dismayed to once again see some particles in the oil!!! 2moro im buying 4 oil cans and 4 filters and gonna flush the living heck out of this thing. The rod bearings looked god, mains too - cam fine, thrust bearing good, I cant find a single darn smoking gun apart from the fact that it wiped a lifter (BADLY) before teardown- At my wits end!! Dont mention a tohatsu 9.8 which carb just keeps flooding (had it off 15 times now and ive been doing carbs for 20 years!), oh adda ford 5.0 with 3 attempts to get intake to seal right!