dtr 125 (milky coloured oil)

lee125 · World Chat Champion Joined: 18 Dec 2005 Karma :

hi today i went out on my dtr 125 and after it had been running a while checked the oil cause it used to have a leak but fixed it and filled it up again but when i checked how much oil was in it was like a milky white colour so i havnt run it since and i just want to know if anyone has any idea what could have caused this

Guest · Brolly Dolly Joined: 22 Apr 2004 Karma :

Usually a sign of condensation if the bike's not been run often or just used for short journeys. A good long run (20 miles ish) to get it nice and warm will cure it.

Unless the bike is watercooled, then it could be a sign that water is getting into the oil but on a (I'm guessing) 2 stroke it'd be very rare for the water to get into the gearbox oil.

Jamie. · World Chat Champion Joined: 27 Dec 2005 Karma :

im not sure, but milky colour oil is what you want, if its black then needs replaced

lee125 · World Chat Champion Joined: 18 Dec 2005 Karma :

yes it is watercooled

Bezzer · World Chat Champion Joined: 14 Apr 2005 Karma :

As Guest says it's probably just condensation "gloop" from the oil due to it not reaching working temperature much in these cold conditions. Just to make sure check your coolant level and also your oil level, if you haven't lost coolant or gained oil then it's OK.
Only way to get rid is to give it a decent run fairly regularly and perhaps block your rad off a bit so it warms up quicker.
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craigT19 · Jolly Green Giant Joined: 09 Feb 2002 Karma :

the guest is correct. condensation builds up in the dt125's air injection system in the exhaust, gets sucked up into the airbox and goes down the crank case breather, then mixes with the oil, giving u your milky colour, good run will solve it.

head gasket shouldt be a problem being an open engine you will see the leak.
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sickpup · Old Timer Joined: 21 Apr 2004 Karma :

craigT19 · Jolly Green Giant Joined: 09 Feb 2002 Karma :

erm well the head gasket is the thing that seals the head, to the bore.

if the gasket had failed u would see signs of leakage, be it an area of darker metle as if it were geting hotter than the metal around it, or in some caser an oil or coolant leak
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Finglonga · World Chat Champion Joined: 27 Jul 2004 Karma :

Google 'Emulsification'. Wink

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sickpup · Old Timer Joined: 21 Apr 2004 Karma :

craigT19 · Jolly Green Giant Joined: 09 Feb 2002 Karma :

i was giving info based on my own recent expeirience of an aerox 50 (water cooled) pissing coolant all over my bench because the head gasket was brocken when the owner decided to fit his own bore kit.
coolant is pumped at lower pressure than the oil j
yes, but its still belting round at a fairly high pressure, certanly high enuf to find an exit Laughing

, ive see coolant leaking from the head on a tdm 850 and an fjr1300 all within the last 6 months, neither had a damaged or warped head.
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Bikes owned :- 2001 nsr125, 1999 zx6r, 2006 yzf-r1, 2009 xmax 250, 2012 yzf-r1, 2015 MT-07
Current bike : - 2016 MT-10
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Knowlsey · Scooby Slapper Joined: 07 Apr 2005 Karma :

you will probably know if its a head gasket leakage if it gets in the oil, simply by draining the oil and seeing how much is in there and how watery white it is and it would overheat due to a watered down oil and many other things happen with bikes as apposed to cars