Single grade oil vs. synthetic

[luvrbus]

I can find no Kubota engine in the manuals I have that say to use 40w all say 10/30w CE or CF rating so I asked the guys in Atlanta at head quarters their answer was 10/30w no 15/40w no 5/50w or straight 40w like you have been using just passing it on from the people that manufactures the engines FWIW

good luck

[harleyman_1000]

I also love people that use hot water heaters. You either have a water heater, or the proper way of saying it would be a cold water heater. Just saying....Good Luck, TomC

I use a bay water heater, because my water is whatever temperature that my bay where the water tank is is   
     just saying  Scott

[Oonrahnjay]

I can find no Kubota engine in the manuals I have that say to use 40w all say 10/30w CE or CF rating so I asked the guys in Atlanta at head quarters their answer was 10/30w no 15/40w no 5/50w or straight 40w like you have been using just passing it on from the people that manufactures the engines FWIW     good luck 

     I wrote Onan about my 10K generator.  I use Mobil 1 5W-40 "Turbo Diesel Truck" oil (CJ-4) in my VW TDI and I asked if it would be OK to use that oil in my generator.  "Tech Service" wrote back and said that that is an excellent oil for the generator engine.

[twostick]

Think Cat bought part of Perkins, maybe 100% of it, I do not know.
I put 6,000Hrs+ on a 1.5L 3 cylinder Perkins (Prior to Cat), no issues using 15W-40 Rotella, now have the Power Tech 12kw Kubota 4 cylinder with only 2,100 hrs, same luck, just a perfect runner, Oh yes, I change about every 150-200 hrs 5 qts also to the 10 gal in the ISM500 about 5,000 miles.  We purchase oil by the pallet, usually 4 at a time, so not a major issue to change oil in the babe.
Not a cutesie operator, see zero reason to buy snythetic, must be a feel good thing ?

I run 10w30 synthetic in the Rigmaster on my truck. It is an old one so it has the smaller blue motor, 400cc IIRC Perkins. Never mind that an engine will last as close to forever on synthetic as is possible for a machine, the biggest reason I use it is that at -20f it will roll over quick enough to fire up without an argument and instant oil pressure. Ordinary winter day it spins like summertime. Conventional 10w30 oil in those conditions was a real groaner on the starter and the oil light took forever to go out.

Can you tell I'm a believer?

Why do you only run 5000 mile oil changes on that ISM? Seems about 7-10,000 too soon.

Kevin