Oil??

JackJ

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BX1870-1
Mar 14, 2016
264
9
18
Indiana
Pros or Cons to using 5w-40 for my L6060?
Hello, and welcome to OTT. Upon searching you will find scads of previous threads discussing motor oil in Kubotas.

Many of us choose Shell's Rotella T6 in the 5w - 40 formulation. In fact, that might be the most popular option from those not going with Kubota oil and who are looking for the best performance.

There are other good options--and maybe none that are bad if you go with a name brand suitable for diesel engines that meets the current specs.
 

85Hokie

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Jul 13, 2013
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Pros or Cons to using 5w-40 for my L6060?
It would be an excellent idea! Specially in cold weather.
Jack points out good info too.

Some like 15-40, personally, the 5w is mo' better when you have to make that engine start in single digits!

As for cons.....really are none - remember, the first digit is the weight of the oil, thus 5 is thinner than 10 or 15......the 40 is what it behaves like ONCE it gets good and hot!

Oil is a pure form gets thinner as it gets warm, typically looses the ability to lubricate as it thins - with a butt load of modifiers, that hot oil NON acts like a 40 weight oil - it actually "thickens" as it reaches the upper limits.;)
 

dlundblad

Member

Equipment
G5200, L2501, ZD1211
May 16, 2009
503
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18
IN
Mechanically, there is zero issues at all. Warranty wise, it is a grey area in my opinion.

A member here said Kubota Corperate has an issue with it being used in hot weather, which is fake news. My dealer on the other hand could care less, but claims people hardly run synthetic, which is also fake news.

I am personally sticking with what is in the manual while my tractor is under warranty. 10w30 is pretty well rounded temp wise, but I am running 15w40.
 

200mph

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L4740-3 Cab, FEL, Fnt Snow Blower L2185, LP Finish Mower, LP Rotary Mower
Mar 3, 2017
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I have been using it (5W-40, T6) in three different Kubotas for as long as I have owned them.
B3030, L3130 and L4740
 

Bulldog

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M 9000 DTC, L 3000 DT
Mar 30, 2010
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Only bad thing I'd say is you really don't need a 40w oil but it's not going to hurt anything but your fuel economy. The 5w part is great in my opinion especially during the cold.

I run 5w30 year round without any issues.