Keep engine cool when do oil change

[Schroeder64]

i change it right when i get back from autozone with my oil so its a bit hot but its fine

[OkSlim]

Originally Posted by johncal

Professionals that recommend warming oil before changing. I couldn't find any that recommended changing it cold. I wanted to go beyond my opinion and see what people that do this for a living had to say. I especially respect the information from Mobil1 and Napa. These are all people with real mechanical and automotive knowledge and experience. Hope this information helps you make the right decision.


http://www.mobiloil.com/USA-English/...ld_Engine.aspx

http://www.napaonline.com/NapaKnowHo.../oilchange.pdf

http://automotive.hardwarestore.com/...motor-oil.aspx

http://www.clarks-garage.com/pdf-manual/eng-17.pdf

http://www.motorists.org/blog/oil-change-essentials/

http://206gti.net/oilchange/

http://www.auto-facts.org/oil-change-tips.html

http://www.lotusespritworld.com/EGui...er_change.html

http://www.usautoparts.net/bmw/repairs/oil_change.htm

http://hubpages.com/hub/How-to-Chang...il--Recycle-It

http://www.mbzponton.org/valueadded/.../oilchange.htm

Don't try to cloud this issue with logic and references

He's rebuilding a jeep for cripes sakes.

[LeanBurn]

Considering the most engine wear occurs at startup, I'll trade my slightly slower colder oil change for less engine wear any day of the week.

[trucknut1]

Originally Posted by johncal

Professionals that recommend warming oil before changing. I couldn't find any that recommended changing it cold. I wanted to go beyond my opinion and see what people that do this for a living had to say. I especially respect the information from Mobil1 and Napa. These are all people with real mechanical and automotive knowledge and experience. Hope this information helps you make the right decision.


http://www.mobiloil.com/USA-English/...ld_Engine.aspx

http://www.napaonline.com/NapaKnowHo.../oilchange.pdf

http://automotive.hardwarestore.com/...motor-oil.aspx

http://www.clarks-garage.com/pdf-manual/eng-17.pdf

http://www.motorists.org/blog/oil-change-essentials/

http://206gti.net/oilchange/

http://www.auto-facts.org/oil-change-tips.html

http://www.lotusespritworld.com/EGui...er_change.html

http://www.usautoparts.net/bmw/repairs/oil_change.htm

http://hubpages.com/hub/How-to-Chang...il--Recycle-It

http://www.mbzponton.org/valueadded/.../oilchange.htm

lol, its amazing how easy it is here to stir up the hate, excellent work on the links! ...you have way to much time on your hands! If i remember correctly you were the guy on another thread telling people to clean their paint with gasoline....

please oh please great sage of the links explain to me which method is going to remove the most dirty oil

... you park your car after a drive around town... engine is hot.. car is off, hot oil drips off internal engine components and runs down into the base... car sits there for hours... you then go out and change your oil... that once hot oil has spent hours filling up the base and you drain it out


...or your park the same hot engine, wait 5-10 min and drain the oil... in both cases its hot oil dripping on the internal components of the engine, the car that sat for hours has had far more time to collect the dirty oil in the base then the car that has sat for minutes...

the only difference is that the cooler oil is going to take a few seconds longer to drain from the base

Don't try to cloud this issue with logic and references

He's rebuilding a jeep for cripes sakes.

[Inhaled Straw]

It's best to change motor oil while warm. Flows much easier. Drains quicker.

Change the oil while it's hot (normal engine operating temperature hot) at your own peril. Ignoring the risk of severe burns from the exhaust system, believe me when I tell you that 180F+ motor oil bursting from the oil drain hole down onto your hands and arms (maybe chest and face) is in no way a pleasant experience. Making it worse is when (not if) you whack your head against the car's undercarriage in a frantic panic looking for a rag to wipe the burning oil off your skin.

[WhiteRabbit]

Trucknut1:

Experience does not equal common sense.

Warmer temperatures = lower viscosity, plain and simple.

Do or say whatever makes your penis look bigger.

[WhiteRabbit]

Originally Posted by trucknut1

please oh please great sage of the links explain to me which method is going to remove the most dirty oil

... you park your car after a drive around town... engine is hot.. car is off, hot oil drips off internal engine components and runs down into the base... car sits there for hours... you then go out and change your oil... that once hot oil has spent hours filling up the base and you drain it out


...or your park the same hot engine, wait 5-10 min and drain the oil... in both cases its hot oil dripping on the internal components of the engine, the car that sat for hours has had far more time to collect the dirty oil in the base then the car that has sat for minutes...

the only difference is that the cooler oil is going to take a few seconds longer to drain from the base

Your logic is completely flawed, it should be worded as:

Which removes the most dirty oil:

1. A warm engine with free flowing oil left to drain for X minutes, or
2. A cold engine with slow viscous oil left to drain for the same X minutes

The correct answer is obvious, at least to most as it may seem...

But I guess no matter how many times you someone's head, it'll never split because it's super hard. So consider yourself ignored, I don't have the time of day to deal with people who always have to have the last word in. Good luck with your GED someday.

[johncal]

Originally Posted by WhiteRabbit

Your logic is completely flawed, it should be worded as:

Which removes the most dirty oil:

1. A warm engine with free flowing oil left to drain for X minutes, or
2. A cold engine with slow viscous oil left to drain for the same X minutes

The correct answer is obvious, at least to most as it may seem...

But I guess no matter how many times you someone's head, it'll never split because it's super hard. So consider yourself ignored, I don't have the time of day to deal with people who always have to have the last word in. Good luck with your GED someday.

The guy's like Ralph Cramden. He know's everything and nobody could change his mind.

I agree with you, the vast majority or people and the professionals that do this for a living even though we're all wrong.

[jdhog]

Man I could sit here for hours picturing hot and cold oil draining out from an engine wondering how many leetle particles of dirt are flowing and wondering what temperature is best......

I still say hot chocolate temp, but thats mainly cos I work on smaller engines and deisels and I haven't got all day to change the oil.