Oil Viscosity question,Honeywell Generator

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Jul 25, 2009
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IL
Hello, I just recently purchased a Honeywell Hw2000i generator. The Oil recommendation is 15w-40 API rating of SF or better. Honeywell told me I can use any 15w-40 as long as it is not specifically formulated for diesel engines. Kinda hard to find. I ended up finding Shell Rotella T that is formulated for both gasoline and diesel. Now my question. Shell advertises Sythetic Rotella T 5w-40 that out performs its coventional 15w-40. Does that mean I can safely run this in my generator? It has API rating of SL. I understand the API ratings, I am curious if I change the weight if it could have adverse effects. Thanks, AndrewM
 
Joined
Jun 26, 2003
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Illinois
If the oil has both gas and diesel ratings it should be fine. I.E a 15W40 that has both SL and the corresponding "C" rating should work. I think what Honeywell is saying is don't use an oil that only has the "C" rating.
 

JTK

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Aug 14, 2003
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Buffalo, NY
 Originally Posted By: AndrewM
..Honeywell told me I can use any 15w-40 as long as it is not specifically formulated for diesel engines.
Gas or diesel rated isn't a concern at all. That's old school misinformation (C-rated only oil as Java stated). I'm glad to see a 40wt spec for a small air cooled OHV engine for once! Nice little inverter unit BTW. J[code][/code] el
 
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JTK

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Aug 14, 2003
Messages
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Location
Buffalo, NY
Honeywell lists it only as "4-Stroke, Single Cylinder, Air-Cooled, OHV, 125cc, big bore." 125cc is approx a 3-4hp. It's probably a little OHV Chinese made engine. Joel
 
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