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View Full Version : why warm engine before oil change


mayojuaf
03-11-2008, 08:23 PM
I have read this is a best practice. Now, don't you want to have all the oil drained to the bottom before you replace it? If you turn the bike on and ride it for 5 minutes, you get all the oil and dirt back in the engine. What better that have it sit for two days and then just open the drain.
Just asking

Beemer01
03-11-2008, 08:33 PM
At least in January in Chicago, the viscosity of my engine oil turns to that of Vasoline.

osbornk
03-11-2008, 10:19 PM
Some of the stuff normally suspended in the oil when you are riding will settle to the bottom and won't drain out with the oil if it is not run to get it suspended again.

boxerr
03-11-2008, 11:46 PM
Just came in from changing the oil, and filter on my R100GSPD.
What a pain the filter is to do.:scratch
Anyway, I did it cold, as I had visions of burnt hands trying to get the filter out.

I know it should be done hot, but any oil change is better than none.

I will probably change it again in around 500ks. Been sitting for a few years.

mrich12000
03-12-2008, 01:01 AM
Always change it warm so it would flow. and have always used Amsoil :thumb

Chicago:scratch Good one:thumb :gerg :ca :lurk
HEY Australia, what the heck is a "drongal?"

GregFeeler
03-12-2008, 08:37 AM
I have read this is a best practice. Now, don't you want to have all the oil drained to the bottom before you replace it? If you turn the bike on and ride it for 5 minutes, you get all the oil and dirt back in the engine. What better that have it sit for two days and then just open the drain.
Just asking

Good question. I always ride my bikes for 15 to 20 minutes to get them good and warm. That allows the oil to pickup any deposits and moisture which may have collected in the engine. Then while it cools in the garage enough to touch, I get my catch pan, filter, etc. ready. The warm/hot oil flows really well and seems to evacuate the engine much better than cold oil.

boxerr
03-12-2008, 09:31 AM
Michael, do you mean a drongo?
A drongo is what we call an idiot, or fool. And a few other things I wont mention.:thumb

rocketman
03-12-2008, 09:54 AM
Good question. I always ride my bikes for 15 to 20 minutes to get them good and warm. That allows the oil to pickup any deposits and moisture which may have collected in the engine. Then while it cools in the garage enough to touch, I get my catch pan, filter, etc. ready. The warm/hot oil flows really well and seems to evacuate the engine much better than cold oil.

Last time I tried to "evacuate" my oil it refused to leave....



So I eventually had to "pull the plug"! Ha ha! :lol


RM

(sorry I couldn't resist, there was just something about using the term "evacuate" to describe draining the oil that just tickled my funny bone! Ha Ha!)

lkchris
03-12-2008, 10:51 AM
At least in January in Chicago, the viscosity of my engine oil turns to that of Vasoline.

It wouldn't if it was synthetic.

lkchris
03-12-2008, 10:53 AM
Some of the stuff normally suspended in the oil when you are riding will settle to the bottom and won't drain out with the oil if it is not run to get it suspended again.

"Suspension" is the correct concept, but it's chemically suspended rather than physically suspended, so it doesn't "settle."

roy
03-12-2008, 01:59 PM
I thought it was to keep my hands warm in the Chicago winters :banghead