synthetic 15w40

[FTG-05]

this went so far from my original question. i was looking for something and everyone told me what i should be using not what i was looking for. As to why i want to go with what they manuel says sort of my nature. i have been an Er nurse/trauma nurse for over 15yrs. You go by evidence based procedures and drug doses. you go by what is written by the drug company as for as doses and procedures that have shown to work. not by what you think. if the manuel says this, that is what i am going by. unless i can get it in writing from kubota

Then why are you here wasting everyone's time? You already have the manual and you already have your answer. If synthetic is not in the manual, then you cannot use it without violating your warranty, per your "I'm an nurse" logic.

 

[Trillium Farm]

This is what I always use, Rotella-T6 synthetic 5W-40, and have been very happy with it.

Your owner manual may have been printed before 5W40 was available. What other have said, go for 5W40 your engine will thank you

 

[murse72]

i appreciate the wealth of knowledge everyone has shared on this subjection but did anyone read the original post? because of all the posts no one attempted to answer the original question is royal purple synthetic diesel oil any good? i never ask anyone what weight of oil i should use but that is what the discussion turned to. you gotta love it lol. this has made from some entertaining reading when it gets slow at work

 

[3930dave]

i appreciate the wealth of knowledge everyone has shared on this subjection but did anyone read the original post? because of all the posts no one attempted to answer the original question is royal purple synthetic diesel oil any good? i never ask anyone what weight of oil i should use but that is what the discussion turned to. you gotta love it lol. this has made from some entertaining reading when it gets slow at work

In historic times, philosophers debated How Many Angels could Dance on the Head of Pin. In many respects, your modern question about RP is similar.

All that really matters - follow the diesel equipment OEM recommendations re. ambient temperature appropriate viscosity (dead horse) and ensure that you meet the minimum Cx rating for diesel oil. Can't remember if Chris has dropped by here, but I'll borrow what he's posted elsewhere - a relative that worked in the lube oil industry for a long time privately referred to the SAE Cx ratings as Same As Everybody - there is a bit of joking there, but also a lot of truth too.

I have never used RP, so can offer no direct observations. My sense of what it is - popular with the tuner/performance crowd, in part because it is visually distinct. Haven't heard anything bad about it performance wise, but I consider it a boutique oil, that is somewhat overpriced - at least around here.

Unless you are doing competitive sled pulling, routinely start your tractor at -40 and only run it for 5 minutes, operate it overloaded for long periods of time at 120F, or some other extremely abusive practice - you will be hard pressed to go wrong with what I laid out in paragraph 2 above. Tractors don't care what colour the oil is, until it turns pitch black for a while.

If you do want more meaningful technical feedback on RP's actual performance - do what I and other oil geeks do - spend time reading Used Oil Analysis reports on bobistheoilguy.com . A bit harder to do with an Ag tractor, but I look for particular reports that match my use profile (matching climate, use and load profile). But again, unless you are looking to push a performance envelope, or deal with a particular issue (say, fuel dilution), that kind of reading time is nothing more than tech education, and a diversion from the garbage on TV.

Diesel tractors are much more at risk from the oil spec split coming up fast in 2017, than any present day Brand X vs. Brand Y debates. (The new class of energy saving diesel oil is NOT back spec'd to support legacy Cx requirements <<< we all need to pay attention to this upcoming divergence in the market).

Rgds, D.

 

[Copperhead]

Well, there are two different specs in the new PC-11 standard coming in 2017. FA-4 which is only applicable to modern diesels made for that spec. And CK-4, which is backward compatible with the previous CI-4, CI-4+, and CJ-4 specs we have around us now. Actually the new CK-4 will have far better oxidation control, for one, compared to previous specs. You are right, one will have to pay attention to the jug labels to make sure what they are buying.

 

[3930dave]

Well, there are two different specs in the new PC-11 standard coming in 2017. FA-4 which is only applicable to modern diesels made for that spec. And CK-4, which is backward compatible with the previous CI-4, CI-4+, and CJ-4 specs we have around us now. Actually the new CK-4 will have far better oxidation control, for one, compared to previous specs. You are right, one will have to pay attention to the jug labels to make sure what they are buying.

Well stated Cu.

I believe some (likely most) of the big names have been producing CK for a while, so it will be just a label change in many cases.

Even on TBN, I suspect no more than 25% are aware of FA coming up fast. I won't post explicitly how I remember that 2 letter acronym..... suffice to say it reflects on how much use it will be to me in olde diesels....

Rgds, D.

 

[2ndhalf]

Royal Purple is supposed to be an outstanding quality oil.. as long as the API rating is equal or better than what your tractor recommends I think it should be fine. But I'm in the same camp with others saying run the 5w 40 Rotella.

 

[roadhunter]

i appreciate the wealth of knowledge everyone has shared on this subjection but did anyone read the original post? because of all the posts no one attempted to answer the original question is royal purple synthetic diesel oil any good? i never ask anyone what weight of oil i should use but that is what the discussion turned to. you gotta love it lol. this has made from some entertaining reading when it gets slow at work

You complain a lot for a newb who struggles with oil changes. Lighten up. Sometimes discussions evolve, that's ok. Oil is one of those topics that everyone has an opinion on.

 

[clemsonfor]

Your owner manual may have been printed before 5W40 was available. What other have said, go for 5W40 your engine will thank you

maybe was written (as in the oil section) but I would not think a tractor with a factory warranty still on it could possibly been made before 5w40 existed...its been around awhile.

 

[clemsonfor]

i appreciate the wealth of knowledge everyone has shared on this subjection but did anyone read the original post? because of all the posts no one attempted to answer the original question is royal purple synthetic diesel oil any good? i never ask anyone what weight of oil i should use but that is what the discussion turned to. you gotta love it lol. this has made from some entertaining reading when it gets slow at work

Sure Royal purple makes good oils. I think everyone's point is that there are many other oils that are better, more readily available and cheaper.