Added Oil Cooler

[Black Knight]

My 83 gs1100gld has an added oil cooler and i'm getting ready to do a fresh oil change . How would i clear out the oil cooler ? . I don't have a air compressor so what should i do ? .

[7981GS]

Do you mean "flush the lines?" or externally clean it?
To flush the lines, use a can of transmission flush.
They come in aerosol cans that hook up to the line and blow/flush any crap out. About $5-7.00 per can.
Available at automotive parts stores.

Daniel

[Black Knight]

What i'm saying is clean the internal tubes ..The cooler is still bolted on the frame ...BTW how much oil pressure does the gs1100 hold ? ...

[bwringer]

What i'm saying is clean the internal tubes ..The cooler is still bolted on the frame ...BTW how much oil pressure does the gs1100 hold ? ...

Why do you feel the need to clean the innards of the oil cooler? If you're just changing the oil, most or all of the oil in the cooler has already drained back into the engine. Don't worry about it, in other words.

If you still feel a powerful urge to flush the oil cooler, or there's some good reason to do this, take both lines loose from wherever they enter the engine (oil coolers on these engines are not stock, so we have no way of knowing which design you have), dump something in one line and let it run out the other until the universe aligns again and you're happy.


To answer your second question, shafties have roller bearing engines that run little to no oil pressure -- 0 to 5 psi at idle, somewhere around 10 - 15 psi max.

The oil pump just sort of pushes oil around the engine, but there's nothing that needs oil under pressure. Seems bizarre if you're used to plain bearing engines, but it works perfectly well.

[SqDancerLynn1]

Make sure to add the required amount of oil and add 1/2 qt for the cooler

[Black Knight]

bwringer ....The cooler is mounted up higher than the block and i don't need any old oil mixed in with new oil .

Anyway i figured out how to get it cleaned ...Thanx for the info ...

[Steve]

....The cooler is mounted up higher than the block and i don't need any old oil mixed in with new oil .

Are the fittings on the cooler on the top or the bottom?
If they are on the bottom, the oil will drain back to the crankcase when you stop the engine.
If the fittings are on top of the cooler, there will be a bit of oil sitting there all the time.

Just curious about your mixing oil statement. Do you remove your valve cover and wipe out the pockets around the tappets?
There will be more oil trapped there than there will be in the cooler, as long as the fittings are on the bottom.

.

[Black Knight]

Steve The connction's are on the bottom ...But 1 thing bother's me ...The hose route loop's down then over top .

If the cooler only holds 1/2 a qt then i'm not to worried ...I just don't like the idea of having just a bit of old oil with new . But what's a guy to do ? ...I'll just deal with

[cowboyup3371]

Honestly, I think you'll always have a bit of old oil mixing with new no matter what you do. There is no absolute way to remove ALL old oil when doing even an oil change since there is still stuff sitting around in each cylinder. I'd just make sure you drain everything well enough and then refill. If you are that worried about it, than run it for a bit and do a second oil change.

[ddaniels]

No way can you completey get rid of every oz of old oil unless you tear the engine down. I wouldn't worry about it 1 bit. I've had other bikes (Bandit for one) that had oil coolers, and never bothered trying to make sure all the oil was out between changes.