Hi all, hope you don't mine a thread revive!
I was searching for "SAE 10W-30" and found this old discussion.
This is my first tractor, MX5200, have had it now about 3 months, am at about 25 hours, and now preparing for my 50 Hour maintenance work, and this appears to be a valuable thread / discussion.
Many helpful replies in here, with lots of good information, thank you for that.
I have a follow-up question please, relating to our locations / ambient air / operating temperatures, and if how you guys have related your tractor use from the Kubota manual documentation.
My location of use, is eastern Oklahoma US, and summer can be easily into the high 90's Fahrenheit. This could be all sorts of use, mowing, moving rocks and dirt, gravel grading, etc. Winter time use, would just be to pick up rocks, move some dirt, gravel grading, etc.
With that said, and the thread discussion has folks with some comments about 0w / 10w / 15w, etc, I would super-appreciate if anyone has recommendations on whether an oil change should be pursued for Summer time, vs Winter time tractor usage? Or, what the best once-a-year oil change should be, if I won't be putting more than 100-150 Hours over the year on the tractor?
I can share the following details, from the Kubota manual -
Above 25C (77F) ----- SAE30, SAE10W-30, or 15W-40
-10C to 25C (14F to 77F) ----- SAE20, SAE10W-30, or 15W-40
Below -10C (14F) ------ SAE10W-30
It is massively unlikely that I would be operating the tractor below 0C / 32F, probably not even below 40F. 90% of the tractor usage, will be with temperatures above 50F, and 75% of the time actually will be at least 77F as they note that threshold value in their temperature scale.
That said, I believe that my best bet is just just stick with the 15W-40, for all-around overall annual usage, and I would do a Full Synthetic, since it will be once a month that the tractor gets an engine start (and there was a comment earlier in the discussion, about a tractor getting started this infrequently)...
I was looking at / considering this -
Shell Rotella T6 15W-40 Full Synthetic Diesel Engine Oil, 1 Gallon
https://www.walmart.com/ip/Shell-Ro...ynthetic-Diesel-Engine-Oil-1-Gallon/869812640
This oil meets the "CJ-4" criteria, but does seem to be more listed as for diesel tractor trailer trucks, than for 'tractors'....!?
"The viscosity grade that we know our customers prefer and trust*, now available in a full synthetic product. Shell Rotella T6 15W-40 Heavy Duty Engine Oil is a full synthetic product formulated for improved** hard-working protection. Shell Rotella T6 is suitable for new and older diesel-powered vehicles from Class 8 tractor/trailers to heavy duty pickups, delivery, utility and school bus fleets. It is suitable as a replacement for mineral and synthetic based SAE 15W-40 API CK-4, CJ-4 oils in low temperature applications. * According to Kline ** Compared to conventional and semi-synthetic Rotella 15W-40 products."
-Strong oxidation resistance in the new Volvo T-13 test, controls harmful acid build up, and easily exceeds the API CK-4 limits for oxidation and viscosity increase.
-Improved oxidation resistance helps prevent deposits in the engine, maintain cleanliness, and prevent acid buildup, which can cause corrosive wear in the engine.
-Excellent oil consumption control, through lower oil volatility in the Noack test compared to conventional Shell Rotella T4 15W-40. Lower Volatility = Lower Oil Consumption.
-Improved copper corrosion protection and lead corrosion protection, with an average of 50% more wear protection than required by API industry wear tests.
-Better cold cranking properties and low temperature pumpability at -15°C compared to conventional and semi-synthetic Shell Rotella 15W-40 products means that it reaches critical engine parts faster in colder temperatures, to minimize wear and make hard work easier in cold climates.
The 'T5' - is also CJ-4 compliant --
Shell Rotella T5 15W-40 Synthetic Blend Diesel Engine Oil, 1 gal
https://www.walmart.com/ip/Shell-Rotella-T5-15W-40-Synthetic-Blend-Diesel-Engine-Oil-1-gal/189732446
Am not sure if the 'Synthetic Blend' is worth the cost of just a couple bucks lower, than the full Synthetic, and it's benefit.
Appreciate any material / advice / experience that folks could share on this related matter to the original post!