Oil change cold

[1-600-matt]

So normally I would run an engine and get it nice and hot before doing an oil change, but would it be bad to just drop the oil out from cold? It's still pretty runny at these temperatures and as the engine has been sat for ages the oils will be well drained to the sump. Is there any other compelling reason to try and get it running before I drain the oil??

[Green_Ninja]

nah just leave it a good long while to drain, better to start it up with 99% new oil than the old stuff that's been sat in there, don't forget the filter and fill that with clean oil before fitting.

[Millhouse]

don't forget the filter and fill that with clean oil before fitting.

last time i did that on my B1 it caused an airlock and wouldn't put out the pressure light....

[ash]

don't forget the filter and fill that with clean oil before fitting.

last time i did that on my B1 it caused an airlock and wouldn't put out the pressure light....

Only way around that is to give it a handful to push it through

[Millhouse]

No ta.
Prefer fitting filter empty

[Jimhas7]

Always done mine and friends when doing them with a full filter, just crank the engine over with the kill switch off for a few seconds before leaving it a few minutes, then start up.

Not one issue in quite a long while of doing it this way.

[Jonesy]

Always done mine and friends when doing them with a full filter, just crank the engine over with the kill switch off for a few seconds before leaving it a few minutes, then start up.

Sitting here wondering how you crank the engine over with the kill swith off????? 

[Green_Ninja]

Always done mine and friends when doing them with a full filter, just crank the engine over with the kill switch off for a few seconds before leaving it a few minutes, then start up.

Sitting here wondering how you crank the engine over with the kill swith off????? 

you can't, pull the plugs out if you want to do that

[andy dutton]

You could turn older bikes over with the kill switch in the off position...

not on these new fangled dangle modern things!

[whoopee]

I've never pre-filled an oil filter on any engine I've ever had.
Never needed to - don't see the point.

[komp]

I sometimes pre-fill if i remember
but sometimes forget too
doesn't seem to make a whole lot of difference

but never run engine til oil is hot
too scared of burning myself
mildly warm is sufficient for me

[Doug_Z1000]

I always pre-fill the filter, it seems a simple job that helps the oil pressure build quickly when you start it after the oil change.

[David W]

The oil pump picks the oil out of the sump though, which is where all the new oil will be, and the oil in the filter will just sit there until the new stuff comes through it and pushes it through.
I'm not sure what pre-filling the filter is supposed to achieve?

[1-600-matt]

The oil pump discharges to the filter, after the filter it supplies the head, crank, gearbox and runs back to the sump. So I can see the logic that soaking the filter in oil will mean the pump has less volume to fill before it sends oil to the engine. My B1 has always been a bit of a pig to get oil pressure back after an oil change, priming the filter seems to help.

Cheers for the responses on the oil change. Worked out it won't start as it doesn't seem to be getting fuel through from the tank. Another little job to sort.