sasilverbullet

1. Do you change your engine oil hot or cold?
2. Provide some reasons why...

Montychristo128

https://www.pelicanparts.com/techart...Oil_Change.htm

Byprodriver

The hotter the better, you are trying to get rid of all the old oil. The hotter it is more will drain out. I drive the car till it is at operating temp (180) then park & drain A.S.A.P

Sula

My theory is that it doesn't matter much:

If you change your oil when hot, it has a nice low viscosity, so a high percentage of it readily flows out of the engine and into your collection pan (provided you're willing to wait about 10 minutes for the last drips to fall).

If you change it when cold, this isn't the case - but it was the last time you shut down the engine, at which time all that hot oil dripped down into the oil pan. And now a high percentage of it flows into your collection pan (again, allow ~10 minutes).

In either case, most of the old oil comes out. And since you didn't wait until the old oil was completely worthless, the fact that only about 99.4% is easily removed does not lead to any problem once the new oil is installed.

acropora157

+1 on the above. Specially when you change the oil often

wyovino

Warm so it flows easily but not so hot that you're going to burn yourself in the process. Conventional wisdom is to let it drain for 20 minutes.

yelcab

I have done it both ways, and absolutely does not matter at all. You change the oil, that is what's important. Life it too short to worry about its temperature. We enthusiast typically change the oil 3x more than the factory recommends anyway.

LexVan

Girly man- cold
Man- hot
Man's man- hot, engine running

Blue Chip

Hot in general. I usually let the car drain for a couple of hours as well. It's incredibly convenient when you have a lift at home to keep the car on while you wait.

Selcuk

808Bill

You keep your car "on" while you wait?

DBJoe996

I totally agree with this. Typically I let the car sit overnight and do an oil change in the morning. That way most all the oil has drained back into the sump overnight and I just let it drain until no more drips are coming out. All in all, it comes out to about a 2 beer job. I also "finger my sump" to feel for any loose bits, but have never found anything.

DBJoe996

I know you are just kidding, but I thought about a statement Jake once made - you can actually run the engine without the drain plug in and no oil will come out, same goes for a hole in the sump plate. So the idea of Man's man - hot, engine running may not work out so well. Just saying........

5CHN3LL

I had a block heater installed so I could change the oil hot without actually having to risk starting the 996.

Capt. Obvious

Don't we all man, don't we all.