drain 1st quart = cleaner??
 

a coworker of mine has a SWEET TT 300ZX, and he says after he drains all of the old oil out, he pours his 1st quart in and just lets it run through the engine and back out. he said that it will get more of the old oil out. what are ur thoughts bout this???

Your basically wasting a quart of oil. You might get like a little bit more out then you would just letting it drain normally, but frankly if you just let it drain it is just fine. If you want to clean your oil system out there is a good product called Sea Foam which cleans your system out good. It is worth the buy and you dont have to waste a quart.

i pour a 1/4 quart to rinse out w/e old oil is left.

u do this with the new oil filter on? old filter on? or no filter?

i do it with the old filter. idk... it may do nothing, but i put about 3 and 3/4 quarts of oil in my car, so i'd have a 1/4 left over if i didnt use it to wash out the motor.

I'm guilty of doing this in the past. But now, i just run my engine before i change the oil so that all the crap at the bottom of the oil pan gets suspended and should drain out with the oil.

this wont do anything...the engine gets lubricated a number of ways, all of which work when the engine is running. dumping a quart of oil in there isnt going to go through the entire block, it'll simply fall, almost vertically back to the pan.

thats exactly what i was thinking. i bought an extra quart for nothing...hoe well.

yup, doesn't do much..... however I do it. Usually the car takes 3.7 quarts or something like that, so I use the 0.3 quarts from the last oil change and dump it in, the first little bit the comes out is black looking, but that about it.

I buy 6 packs of Mobil 1 so, so with ever 2 packs I get a free oil change with the 4 left over.

he let's it run through the engine? ... like when the engine is running?

No, just when he changes the oil, before putting the plug back to fill the engine up, he puts an extra quart through it. The engine is not running or anything... I hope.

If he turns the engine on with the oil drain bolt out we will all hunt him down and kill him for his stupidity.

Not nearly as bad as the SR(etarted)T-4 driver who thought green cleaner would be good inside the engine to clean it.

yeah. another srt4 guy who couldn't get his drain bolt out, so he took his oil filter off and started his car to drain out the oil from the filter hole. yup.

that's why I asked.