Kohler 5W-30 100% Synthetic 16 hours; Kohler 38RCL Generator

[2.7ecoboostFordBronco]

Ran this 12 year old generator for 16 hours on this oil over 7 months with a Kohler brand filter. This was about 4 hours of runtime from its twice a month 20 minute maintenance runs and 12 hours during a wind storm. It is a whole-house standby 38kW generator with 195 hours total run time. It uses a 2013 GM 4.3L Vortec V6 engine that runs on natural gas.

Apparently Horizon charges extra for fuel dilution or TBN on natural gas engines. I'm no chemist so I'm not sure if those are pointless tests for natural gas engines or not.

I swapped it to HPL pcmo premium plus 0W-30 and a Premium Guard EX filter and will leave it in for a year.

 

[fantastic]

That's cool it's a GM 4.3L in that generator. Not sure what new Kohler Si would be so they possibly have that included. Looks good overall. How long do you plan on running the HPL?

 

[2.7ecoboostFordBronco]

That's cool it's a GM 4.3L in that generator. Not sure what new Kohler Si would be so they possibly have that included. Looks good overall. How long do you plan on running the HPL?

I’ll run it for a year and change out. It’s strange with a 12 year old engine but the high Si could be still due to the low run time/wear in? 200 hours is only equivalent to about ~7000 miles if the engine were on a car averaging 35 mph, I think. They also replaced a water pump last year before I acquired it due to a leak.

 

[2.7ecoboostFordBronco]

Here it is with fuel dilution and base no.. I wasn’t sure if I’d get those but am glad they reran it.

 

[Panda87]

Late reply here but that’s a solid report. That oil could have easily run twice the service it ran for. Thanks for sharing.