Synthetic or Conventional motor oil in Kubota diesels

GeoHorn

Well-known member
Lifetime Member

Equipment
M4700DT, LA1002FEL, Ferguson5-8B Compactor-Roller, 10KDumpTrailer, RTV-X900
May 18, 2018
6,204
3,512
113
Texas
Aint that the truth - but there have been those that have!!!


Funny how the first commercial SYNTHETIC oil was developed FOR the flying machines - JETS

A M S O I L
HORTH-THIT. ( You can’t believe everything you read when “A-I” pops an answer on Giggle.)
Amsoil was never around Germany in WW2. It was first developed in the late 1870s in Germany and was widely produced during WW1/2 by Fischer and Tropsch.

The early (1960s) turbine oils used in Bristol, Rolls Royce, GE, Westinghouse, etc were ASTO 500 (Shell) and Schaeffer and Mobil. How do I know? I’m that old and flew those contraptions…and personally poured many hundreds of gallons of that stuff in those early “total-loss” lube-systems.
 
Last edited:
  • Like
Reactions: 1 user

ACDII

Well-known member

Equipment
L4060HSTC-LE, loaded. B2410, L352 Loader, Woods BH70-X backhoe
Oct 21, 2021
683
428
63
Illinois
It's good stuff. Over priced/hyped IMO but if it was competitively priced and easily available I'd run it.

Same here. For my diesels though I run purely Rotella T6. It's also Synthetic and has a great track record with the millions of miles driven with it in use. I normally get an oil analysis with the oil change on my F350 and I have never had a bad reading. It does lose viscosity over time, but not enough to be a concern.
 
  • Like
Reactions: 2 users

GeoHorn

Well-known member
Lifetime Member

Equipment
M4700DT, LA1002FEL, Ferguson5-8B Compactor-Roller, 10KDumpTrailer, RTV-X900
May 18, 2018
6,204
3,512
113
Texas
These two sentences seem to contradict each other. Can you clear up the confusion?
Yes, Thank you for pointing out my poor sentence—construction.
I SHOULD have written :

“Amsoil was never around Germany in WW2.

Synthetic oil was first developed in the late 1870s in Germany and was widely produced during WW1/2 by Fischer and Tropsch” …And I should have clarified by adding …” long before Amsoil was established in the late 1960s in the U.S.

Thx.
 
  • Like
Reactions: 1 user

ACDII

Well-known member

Equipment
L4060HSTC-LE, loaded. B2410, L352 Loader, Woods BH70-X backhoe
Oct 21, 2021
683
428
63
Illinois
There used to be a product, I think they called it CQ, that would bind Molybdenum Disulfide to metal and was invented during WWII. Moly Black Gold was the product that contained this lubricant, and was a pyramid scheme gone bd, but the stuff did work. Apparently it was used in planes and tanks and kept the engines running longer when they lost oil. Metal discs treated with the MBG were put on a hot plate and the heat turned up and you could see the metal sweat as it heated up. When they were cooled down, it would get sucked back into the metal and left a fine sheen of Moly on the surface. It was based out of Canada and I have no idea where it went from there, but it was something to see in action.
 
  • Like
Reactions: 1 user

Mark_BX25D

Well-known member

Equipment
Bx25D
Jul 19, 2020
1,785
1,302
113
Virginia
Yes, Thank you for pointing out my poor sentence—construction.
I SHOULD have written :

“Amsoil was never around Germany in WW2.

Synthetic oil was first developed in the late 1870s in Germany and was widely produced during WW1/2 by Fischer and Tropsch” …And I should have clarified by adding …” long before Amsoil was established in the late 1960s in the U.S.

Thx.
Thank you! That makes a lot more sense! (y) (y)
 

Mark_BX25D

Well-known member

Equipment
Bx25D
Jul 19, 2020
1,785
1,302
113
Virginia
Over priced/hyped IMO

Agreed! If it were as miraculous as the dealers say it is, it would be the Eighth Wonder of the World. At BEST, it might be a high quality, competitive, synthetic oil. I have no idea if that's true or not, but even if it is, that still means, it's nowhere near as good as they typically say it is.

My one experience with it was a disaster, back in the early 80s. I tried it in a late 70s Honda 350 which had had zero problems to that point. Within a couple of weeks of changing the oil with an Amsoil product, the engine pretty much disintegrated. Quality control problem? Or just a case of too much detergent removing deposits that were filling in pre-existing rough spots? Or just coincidence and no fault of the Amsoil?

I'll never know, but I haven't tried it since.

Really, the aggressive fanboyism from the dealers is enough to keep me far away from it. If they'd come down from the clouds and join reality, they'd probably sell more.
 

lmichael

Well-known member

Equipment
Kubota G2160
Apr 23, 2021
726
347
63
Rockford IL area
Same here. For my diesels though I run purely Rotella T6. It's also Synthetic and has a great track record with the millions of miles driven with it in use. I normally get an oil analysis with the oil change on my F350 and I have never had a bad reading. It does lose viscosity over time, but not enough to be a concern.
Yep, I buy T-6 5W40 as well for any outdoor equipment I own. Though I have been whittling down my use of internal combustion engines. Hoping to eventually get to battery operated for everything except a generator (I think it's dumb people calling those big batteries "generators" anyway.), but I won't give up the Kubota
 

Gus1957

Member
Premium Member

Equipment
M6800, L2501 TLB, BX2370
Dec 17, 2023
40
35
18
Cobleskill NY
There used to be a product, I think they called it CQ, that would bind Molybdenum Disulfide to metal and was invented during WWII. Moly Black Gold was the product that contained this lubricant, and was a pyramid scheme gone bd, but the stuff did work. Apparently it was used in planes and tanks and kept the engines running longer when they lost oil. Metal discs treated with the MBG were put on a hot plate and the heat turned up and you could see the metal sweat as it heated up. When they were cooled down, it would get sucked back into the metal and left a fine sheen of Moly on the surface. It was based out of Canada and I have no idea where it went from there, but it was something to see in action.
It had Mica in it.