Would like to know the reccomended oil weight and brand??? Thanks... Kabuta did not answer my phone call.....
Any good C rated 15/40 like Delco 400 works
Detroit diesel 15/40 is that the same???? Dont know what C is???
only difference it is made by Mobil the C stands for compression fired engines like diesels on the oil ratings no spark plugs that oil will do fine
Thanks,,, one quart low and need to add some soon???? Thanks
Quote from: Busnut83 on March 06, 2012, 04:37:19 PMDetroit diesel 15/40 is that the same???? Dont know what C is???
Look at a can or bottle of oil. You'll see the API "bullseye" symbol and ratings like SM/CI+4. The S part is for "spark ignition engines" (gasoline) and gives a rating which has been mostly about emissions and fuel economy for the past few years; the C is for "compression ignition engines" (diesel), generally, it was about engine protection which in large part meant anti-wear additives and soot-handling but in the past couple of years has become a lot more about safeguarding EPA junk like diesel particulate filters and catalysts. (A suffix like "4" or "2" designates an oil that's been specifically rated for 4- or 2-stroke engines.)
I've known some oil experts who say that CI was the best diesel oil, the newest "CJ" often has levels of zinc and potassium anti-scuff and anti-weat additives reduced so as to not mess up emissions-control components. I pretty much think that this is overblown, any oil that rated better than CF is better than most anything that could be produced in a lab 25 years ago. (All oil ratings supersede - an SM oil is supposed to be good in any gasoline engine that requires SM or any "lower" letter oil; same thing for C-rated oils, there was a huge improvement in oils about CF.)
Anyway, my choice for a new generator would be Mobil 1 5W-40 pure synthetic "Turbo Diesel Truck" oil but a big part of that is that I've seen how it works in my VW TDI (and I already have it on hand) and there doesn't seem to be much that beats it in high-heat, high-soot, high-load conditions. The difference between oil circulation times between 15W-40 "mineral" oil and 5W-40 synthetic during cold startups below freezing is amazing; in reference engines, the 5W-40 has 90% of full oil pressure at all bearing points within 5-7 seconds; 15W-40 still hasn't achieved *any* pressure at some bearing points after 60 seconds.
FWIW, we use Rotella 15/40 in ours (triple protection). We have a 20KW also, and it seems to do well for us.
John
As a Kubota tractor dealer, we reccomend delo400 15w40, Shell rotella 15w40 or the Kubota 15w40. May be either of the first two in the Kubota bottle.
I use john deer 15/40 extra guard