| Author | Message | ||
| john degemis (Degemis)
Registered Member Username: Degemis Post Number: 65 Registered: 3-2008 Posted From: 71.92.155.232  Rating: N/A |
My trany fluid looks more like motor oil than Transmission fluid. Dose not smell burnt. My first thought is to change it. But in the past I have had two older cars that the fluid had probably never been changed and was no longer good. The first car I changed the fluid and the second I had a Transmission shop do it both Transmission started to slip bad and needed rebuilding. I guess the old fluid had turned to lacquer and coated the plates and such. Than the new fluid acted as a cleaner and that was the end of there life. So my questions are, is there a way to tell if it is bad? Do bus companies ever use a fluid in the transmissions that is not ATF? She drives great if I leave it alone it will probably last a long time.. It is an Allison 5 speed | ||
| Pete/RTS Daytona (Pete_rtsdaytona)
Registered Member Username: Pete_rtsdaytona Post Number: 557 Registered: 1-2005 Posted From: 97.104.15.224  Rating: N/A |
Allison recomend either Dextron III or C4 FLUID ???? for severe duty / off road duty C4 FLUID ???? for air temps above 95 degrees Pete RTS/daytona (Message edited by pete_rtsdaytona on June 16, 2009) | ||
| larry currier (Larryc)
Registered Member Username: Larryc Post Number: 230 Registered: 2-2007 Posted From: 64.12.116.203 Rating: N/A |
Motor oil is acceptable. It was more popular some years ago. Its cheaper to change and would probably be my choice if I didn't already have ATF. I think it rules out a lot of problems because some of the new ATF eats gaskets if mixed, and its real hard to always get the same spec ATF without going to Transynd. I think you are lucky if you already have motor oil in service in your Allison. | ||
| Pete/RTS Daytona (Pete_rtsdaytona)
Registered Member Username: Pete_rtsdaytona Post Number: 558 Registered: 1-2005 Posted From: 97.104.15.224 Rating: N/A |
oooops That's ALLISON C4 Fluids - what ever that may be ??? http://www.allisontransmission.com/news/Apr2001/75.jsp Sorry - could not edit my original post password errors ?? | ||
| Pete/RTS Daytona (Pete_rtsdaytona)
Registered Member Username: Pete_rtsdaytona Post Number: 559 Registered: 1-2005 Posted From: 97.104.15.224 Rating: N/A |
Called Valley Detroit Diesel Allison 11300 Inland Avenue, Mira Loma California Phone: (951)681-9283 THEY SAID - A lot of HT740/741 or VT 730/731 used MOTOR OIL - IF it's in there DO SWITCH - stay with the motor oil - they even said it worked better in many cases If you have Dextron III (RED) don't mix the two Pete Sorry for the confusion | ||
| john degemis (Degemis)
Registered Member Username: Degemis Post Number: 66 Registered: 3-2008 Posted From: 71.92.155.232 Rating: N/A |
Pete thank you very much. I assume it would be the same for HT-754 I like the idea of oil tye more I get to know my coach the more I like it. | ||
| Luvrbus (Luvrbus)
Registered Member Username: Luvrbus Post Number: 705 Registered: 8-2006 Posted From: 74.33.63.151 Rating: N/A |
John, check www.utxchange.com under service information they have a list of all approved oils for the Allison good luck | ||
| Kasse Weikel (More_s_than_as)
Registered Member Username: More_s_than_as Post Number: 62 Registered: 4-2009 Posted From: 24.205.97.163 Rating: N/A |
pete that post of yours has a typo or two i think iand was a little confusing i called teh same shop you refferenced here and asked em a bunch a questions cause im dealing with a fluid change myself the guy said DONT SWITCH IF EVERYTHINGS WORKING GREAT he said "if it aint broke dont fix it." he also explained that unless you do a "evacuation" and get out ALL the previous fluid you definetly SHOULD NOT switch using whatever you have if it previously had motor oil, use that. if it previously had ATF, use that. you can easily tell the difference when draining it. take a light under there with you and if the fluid pouring out is red and translucent then thats ATF. if its black and NON-translucent its motor oil HTH FWITW - the people at that shop were really cool and the guy didnt mind answering questions at all and even said call back to chat if i want, thats my kinda shop! |