Kohler Engine Update School

[Jasonenginetech]

Kohler confirmed two things in class this last week. First, changing oil often(every 100 hours) is more important than using the best synthetic oil. Second, Kohler was like a dictator when it came to only running 10w-30 in their engines with hydraulic lifters. Now they're pushing 20W-50(over 32 degrees) for increased engine cleanliness, less wear, runs cooler, and less volatility.

 

[Ramblejam]

Originally Posted By: Jasonenginetech
Now they're pushing 20W-50


Do you have this in writing?

 

[Jasonenginetech]

I have the info at work - I'll post a pic sometime this week. Reading between the lines - I see this applying more to the Kohler big block engines that are used commercially in hot climates. The hydraulic lifters have a design change as of Sept. 2013. With older Command series engines I would still use 10w-30.

I personally have never seen hydraulic lifter issues by using thicker oils, the lifter problems are from not changing or overheated oil.

 

[Donald]

Originally Posted By: Jasonenginetech
Kohler confirmed two things in class this last week. First, changing oil often(every 100 hours) is more important than using the best synthetic oil. Second, Kohler was like a dictator when it came to only running 10w-30 in their engines with hydraulic lifters. Now they're pushing 20W-50(over 32 degrees) for increased engine cleanliness, less wear, runs cooler, and less volatility.



Is this a generic Kohler statement or just those without pressurized oil and a filter?

 

[JTK]

Good to hear!

I ran 15w40 in my Command and Courage V-twins as well as my old K-series.

 

[Jasonenginetech]

Oil choice is never black and white. It's still a personal choice that is different for every application. I was just shocked to see Kohler selling and advocating the use of 20w-50. I personally use Delo 5w-40 HDEO in all my outdoor power equipment with frequent oil changes. Honda generator Mobil 15w-50. In my turbocharged Fiesta ST and Mustang GT mobil 0w-20. Motorcycle Mobil 10w-40.