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Old 07-17-2016, 06:55 PM   #11
Mini-Skoolie
 
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Thanks for all the help guys, I'll probably just get some of the rotella t 15w40 from Sam's club since it's fairly cheap and readily available. I'll have a look in tractor supply too before I buy from Sam's club. Don't go in there enough to know what they have. I'll probably do the transmission fluid and fuel filter while I'm doing the oil, might as well, no idea when either was last done.

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Old 07-17-2016, 09:04 PM   #12
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Location: Danglebury, Tejas
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Year: 1999
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Chassis: IH 3800
Engine: Navistar DT466E
Rated Cap: 72 passenger
Yup, the days of oil related failures are pretty much gone. If you are changing the oil at the specified intervals, and using a quality oil, you should be good to go. These days even a cheap oil is better than many "premium" oils of yesteryear. The chemistry has come a long, long way.
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Old 07-19-2016, 01:47 PM   #13
Mini-Skoolie
 
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I stopped by tractor supply today and saw they had traveller brand oil pretty cheap. Does anyone have an experience with it? Almost half the price of rotella. Leaning towards just buying the cheapest oil.





Kind of unrelated but has anyone used the universal tractor trans/hydraulic fluid for the Allison transmissions? Looks like it meets specs. Also not badly priced.





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Old 07-19-2016, 02:14 PM   #14
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Year: 1999
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Chassis: IH 3800
Engine: Navistar DT466E
Rated Cap: 72 passenger
Do NOT use the universal tractor fluid in an allison. The c-spec is ancient. Totally inappropriate for any tranny today. The only reason TSC carries that stuff is because there are a lot of old tractors out there that can run on it. These tractors are low speed engines with high clearance pumps. They use the same sump for both transmission and hydraulic feeds. You want a Dexron3 or better, minimum, for a Allison 545/643, and ideally a TES-295. Note that the fluid says it is "recommended" but does not say it actually meets any spec. In other words, it has no official approval for that use.

The 15w40 motor oil is ok. Not great, but if you change it frequently it will do alright. But for about 3 bucks a gallon more you can get Delvac or Delo on sale at WallyMart.
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Old 07-19-2016, 02:41 PM   #15
Mini-Skoolie
 
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Thanks for the input. I'll stick with finding some dexron 3. I'll have a look at Walmart for oil, Sam's club has rotella 15w40 for about $73 for 6 gallons. Doesn't seem too bad

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