When to change Allison Transmission oil
It's been 53K miles and 10 yrs time on my present allison transmission " synthetic oil". Would you recommend an oil change due to the 10 yrs time?
Forum Discussion
In 2005 is when Allison switched to Transynd fluid and the extended change interval. If that is what you put in 10 years ago, you should be OK. If DEX III was put back in your transmission, since that is what it came with, I would change it and the filter.
