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I have had a Jasper tranny in my truck for five years- the stock tranny failed because of my abuse, so I replaced it with a Jasper. I had three new trannys in three years go in- each one lasted about a year. Every time Jasper replaced it with no expense to me. I recently found out from Mike Troyer that the reason I was having rapid repeat failures was because I didnt change my tranny cooler with the new tranny's, and they where contaminating the new trannys as soon as I ran them.
The last one just came back with a report from Jasper: there was coolant in the tranny so they arent covering labor on it, but they still gave me a brand new transmission to replace it becuse my radiator was leaking coolant into the ATF causing it to fail.
While I had that out I did a Lightning motor swap, and switched to a 4r100 transmission to handle the new power. I went with Jasper again for the new one. IMO its well worth it for a 3 year/ 100,000 mile warranty.
By the way, if anyone is interested I still have a brand new Jasper 4r70W im not using.....
Last edited by kaptain; 12-12-2007 at 08:09 PM.
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