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Oill?

V

Vern

Member

I have a 2009 CC GT2542 lawn tractor. 42" cut. Kohler Command 20 engine.
698 Hrs on it. It seems to be burning oil.
I have been using 10-30 chevron in it since it was new.
It's coming up to oil change time (every 50 hrs)
Would it be ok to switch to Delo 15-40?

Vern
 
I would stick to the 10w30 oil. I ran the 15W40 in my garden tractor and I had balancer problems. After I repaired the engine and went back to the 10W30 no more problems.
 
I can see no reason for not running 15-40 oil. I have been using 15-40 in oil my Briggs and Kohler powered garden tractors since the early 70"s and have have yet to have problems from using it. Some will tell you they will use oil but I have yet to have one use oil from running 15-40. But I change oil every 50 hours on machines with filters and every 15 hours with no filter.
 
I would use the heavier oil in summer usage, but not when cold start temps are below 40-50 degrees. Hydraulic lifter clearances wouldn't like the thicker oil IMO.
 
(quoted from post at 08:10:39 08/14/16) I would use the heavier oil in summer usage, but not when cold start temps are below 40-50 degrees. Hydraulic lifter clearances wouldn't like the thicker oil IMO.
Click to expand...
Well that's wonderful thing about multi-viscosity oils when the oil is cold it has the viscosity of 15 wt and when hot it = 40 wt so there will be no problems with lifters.
http://www.upmpg.com/tech_articles/motoroil_viscosity/
 
Kohler reccomends 10w30 in those engines to keep the hydraulic lifters working right and not clattering.
I would not change to a higher weight oil because it will change the leakdown rate of the oil through the metered hole in the lifter.

How much oil is it using? 2 ounces per hour is considered not excessive for most small engines. So all you guys better be checking the oil every time you mow.

How much dust has bypassed the air filter? You are not blowing it out, are you? Blowing out a paper element makes the holes in it larger than they were before and then dust goes right through.
Can you see dust in the carburetor throat? Dust kills rings.

If it was in my shop I would check the compression and check crankcase vacum.
It would also be a good idea to do a leakdown test. If all other checks are negative, there is a strong possibility that the reason its using oil is the head gasket(s) are blown and pressurizing the crankcase, which forces oil through the crankcase breather.
 
(quoted from post at 06:32:27 08/14/16) How can oil choice possibly relate to a problem with the balancer gears? Splain that to me, if you can.
Click to expand...

The balancer on the Kawasaki motors is not a gear type. It has two connecting rods that straddle the piston connecting rod. Then there is a guide pin that is part of the crankcase that the weight move on. This guide pin galled to the weight. There is a service bulletin out on this issue related to oil viscosity.

#6 guide stuck in #4 Balancer weight

39268.jpg
 
I don't worry about winter or cold weather because I only mow grass in warm weather and tractors set idle over winter..
 
Do you get some smoke after starting the engine that last for a minute or two?

If so check the valve cover gasket bolts. Better yet remove the valve cover and replace the gasket.

I have noticed a lot of Courage engines with leaking gaskets that allows some oil to drip onto the exhaust.
 
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