I will consider this. I run my engine for 3 seconds after the oil has drained and get another half quart. I'm uncomfortable doing that because it takes the oil away from the crank and cam. But I can see by taking the plugs out, there wont be much stress from the compression. THat would get all the dirty oil out.

Any thoughts

Beary

 

He removes the spark plugs to release the compression. If you get oil out the spark plugs holes, you've got serious problems!

 

LOL That's what I thought but his post got me confused. There's no oil in the combustion chamber anyway, only air and fuel.
Now what does releasing the compression mean?

 

IT means taking the pressure off the crank and bearings mostly. There is a thin film of oil between the two parts and if there is not oil pressure during the compression, the thin film will not be enough to prevent metal to metal contact. Taking away the compression might be enough to keep enough film to protect the parts.

Beary

 

I see, thanks. I feel more comfy with the method used by the Scavenger system which uses 1 qt of fresh oil pumped through the pipe plug and pushing the remaining old oil out with the engine running with a dummy oil filter. I won't consider cranking the engine with no oil in it.

 

My routine is to go to the end of my road, hang a right and give it good hard ride once around the block to warm it up. But then, going around my block is about 20 miles. Just seems to make sense to warm it up first.

Dawg makes a good point about the dealer. When you check your bike in for a service the next day, there is no friggn way that the tech takes your bike for a 20 minute (or more) ride to "warm it up to normal operating temperature" before the oil change. As a matter of fact, I think it would be good marketing technique for a dealer to advertise actually use an oil scavenging system.

All in all, I'm a believer in heating up the pig if possible.

 

Harley had it right on the 1930-1936 flat heads. Motor never ran on old oil...after your bike started smoking some you simply pulled over to the side of the road and could drain the engine oil on the ground and then refill the motor from the on bike reservoir of new oil and you were good for another 500 miles.

 

My bad. I meant to say spark plug wires and that is so it does not start. I then hit the starter a couple seconds. As far as engine damage I have done this with regular oil without much concern but feel fairly confident the few short strokes using synthetic is not a problem at all. As far as how much more oil I get out it may be only half a pint but like I said, I am ****....

 

I'm glad you said that because I was sure thinking it!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

Strtarrow...Are you off your meds again????.... o~`o....