- 890
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- Las Vegas Nevada
You think that will help it auto SHIFT without letting off the throttle?Yeah change to 10wt
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You think that will help it auto SHIFT without letting off the throttle?Yeah change to 10wt
Here is the link to the Allison Approved fluids page.
On Highway are ALL ATF fluids, Off Highway have a mix of oils.
http://www.allisontransmission.com/parts-service/approved-fluids/on-highway-fluids
I really can't speak to the M-series trucks but in the fire service I think we classify as Severe Duty! A typical ladder truck with a pump on it weighs in around 78K lbs with all it's equipment and hose. We go from cold in the station to full throttle in 90 to 120 seconds from start up. In the older trucks with the HD740 transmissions we ran Dextron. Serviced filters once a year and changed the oil every other year. When we changed to the transynd, we extended our drain interval to 5 years but still kept the filter change at once a year. It was also worth a 15 degree drop in operating temp.Thanks for the link, sure wish Allison would have been more specific as to what to use.
So what do you think the difference is between on road and off road? lower speeds and higher heats off road, vs. higher speeds and less heat on highway.
Sure wish they listed good, better, best for MT654CR transmission, or would even say which group of fluids are recommended for the MT654CR.
(I am assuming that the M939 series trucks use the MT654CR per the inter-webs)
That supports the TM which shows dex for 75+ temps and the oil solution for 100+ temps. That was one reason for my interest in this thread. Is the synthetic best of both worlds or just an expensive version of dex.Been doing some more research and everyone running dex should be fine as long as your not doing extreme off roading or heavy hauling or doing both off rd heavy hauling.
This would not include pulling trailers.
The reason from what I am unstanding is dex has a lower boiling point and will over heat.
You got a website for your tours?[/QUOTE][PS: Come and visit us in Nevada City Montana and take a ride. It is one heck of a trip, 14 miles, about 6 of which will feel like they are straight up. 8500 feet in elevation right to the foot of a mountain and through more than a dozen mines and 5 old towns. I can no longer offer camping at our place because the 923 is parked there but I can recommend both with and without services. (read paid or free) Mention SS and I will discount the whole group 50%.