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Old 12-09-2018
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zedbike zedbike is offline
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Drowned WR250F 4 lots of oil, still milky

So I am working on a drowned WR250F and have put 4 lots of clean, new oil into it and its still coming out milky. The bike starts fine, not sure how there is still water in the engine. The coolant level is correct so a cracked head is not the answer...

Any ideas?
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Old 12-09-2018
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So buy yourself some Wynns Engine Flush.
So no other brand.
So get some cheap 10W40 mineral oil
So put the oil + Wynns in and ride the bike gently up to operating temp.
So drain the oil.
So repeat the process.
So use a fresh filter each time.
So that'll get it clean.
So all hail the superfluous conjunction.
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Old 12-09-2018
Ando300 Ando300 is offline
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It can take quite a few changes to get all the water out (don't ask how i know ). I'm guessing the roughly 200ml of oil that stays in the motor during a normal change is the main culprit.

I changed mine 5-6 times until it showed no signs of water during a short warmup. Then i took it on a long hard ride. It got a bit milky during this ride, one final change and happy days since.
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Old 12-09-2018
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Awesome, thanks gents.

Will do a couple more flushes this time using the Wynns Engine Flush.

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Old 12-09-2018
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Quote:
Originally Posted by Ando300 View Post
It can take quite a few changes to get all the water out (don't ask how i know ). I'm guessing the roughly 200ml of oil that stays in the motor during a normal change is the main culprit...
Correct. If you check in your manual Zed, there'll be a gap between an initial fill and an oil change fill. What Ando said is what happens. A good little ride with lots of jumps and gear changes will clean the gunk out. Wynns flush is EP rated so it's fine to ride on.

In tough going most bikes run about 105-110c oil temps so the water will boil off to a degree. Just don't rev it hard or load it up until it's clear.
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Old 12-09-2018
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Not my bike so I have no manual, but will let the owner know to change again after a ride and to take it easy. He is Irish so who knows what he will do...
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Old 12-09-2018
axel axel is offline
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He may fill it with Wynns and add a bottle of oil?
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Old 12-09-2018
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Quote:
Originally Posted by axel View Post
He may fill it with Wynns and add a bottle of oil?
Wouldn't hurt. Wynns is the only engine flush rated 0W30 and EP70. All the rest apart from CEM are solvent-based, Wynns is detergent-based.
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Old 12-09-2018
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fetid_swamp fetid_swamp is offline
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its prob horrific for the engine, clutch, trans, bearings and everything incl OHS but back in the olden days on the farm, early 80s XLs XTs and DRs, old mate would warm them up, drain the old gunk out then fill them up with diesel, get them warm for a bit then drain and fill with usual oil, new filter and they'd go straight back into service...
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Old 13-09-2018
jd_crf jd_crf is offline
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The WR doesn't have a recirculating system on the breather like the DRZ does it?


With a DRZ, you'll never get rid of the water until you disconnect the black box.


As said by others, don't ask how I know!!
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