My tranny has a very, very, very slow leak. It is one of those leaks that is so slow it does not drip on the ground, but just sort of dirties up the pan of the tranny. So anyway, as I was returning home from a race trip in Sierra Vista, Az. my check engine light came on simotaniously with a flashing check trans light The trans was shifting good and not slipping or making any strange noises so I drove it the rest of the 50 miles home while paying close attension for any slipage or noises. Today I drained the pan and found it was 1 quart low. So the tranny got filled with Valvaline max life (75,000 mile) ATF plus one quart of their max life w/stop leak (we will see if that helps). Disconnected the battery and reset the computer. All is good in VX land!