Burning oil.

footballfan33

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My B27 is burning oil. I’m on oil “change” 4 at 56 hours. Used Kohler’s 300 hour synthetic the last 2 times and that might as well be water.
 

MParr

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My B27 is burning oil. I’m on oil “change” 4 at 56 hours. Used Kohler’s 300 hour synthetic the last 2 times and that might as well be water.
At 56 hours, it should still be under warranty. I would have the dealer look at it. Most oils get pretty thin when hot, in air cooled engines. That Kohler 300 hour synthetic oil is pretty high dollar to be changing that often. It’s a 10W50 synthetic oil. May I suggest using Valvoline VR-1 20W50 conventional oil and not changing so often. Or, a conventional 15W40 Diesel engine oil. Do your oil changes as outlined in the Kohler engine owners manual. Your dealer likely has a oil filter cutter. Have them cut one open and take a look inside.
This is another good choice.
 
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StarTech

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Personally I have switched over to using 15W50 Synthetic with zinc additive here for my customers' oil changes.
 

MParr

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Personally I have switched over to using 15W50 Synthetic with zinc additive here for my customers' oil changes.
Yep, there’s a good bit of zinc in it. However, the Valvoline VR-1 20W50 and the Motorcraft Super Duty 15W40 are also loaded with it. And, both are much cheaper than the Kohler oil.
You having repair business only makes sense to use something like Mobil 1 15W50. It can be used in engines and hydros. Plus, it’s not as expensive as the Kohler 10W50.
 
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StarTech

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Yes I am using Mobile One is nearly every engine. One main reasons is the Summer temps are right at 100F on days and the engines need a heavier grade of oil as it thins quite bit at these temps.

I was buying Kawasaki oil but the shipping has gotten out of sight lately for it. Last year it was cheaper of the two but that has changed. And of course I buy it in the 5 qt jugs which lower the price too.
 

Hammermechanicman

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770-132_02_Z.jpg

I go through about a case a month of this. Last year used over 25 gallons of it.
 

Hammermechanicman

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My B27 is burning oil. I’m on oil “change” 4 at 56 hours. Used Kohler’s 300 hour synthetic the last 2 times and that might as well be water.
Does the engine smoke? Especially when idling? Have you removed a spark plug and looked at it? Oily?
 
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Rivets

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I’m going to get asked over the coals for this, but here goes. According to the owners manual and service manual for Kohler‘s EFI engines you should be using a 10W-30 oil, not 10W-50. Second I don’t understand 4 oil changes in 56 hrs, if your burning oil. One change after breaking and a second at 50 hrs would make sense to me and if oil level drops a top off. How much oil are you burning, over what time period? In this case 2+2= ??? to me.
 

MParr

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Every 100 hours or annually. 10W30
 

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MParr

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Check for oil leak on the crankshaft output.
10W50 Kohler oil is an option.
 
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