The tranny fluid in my 89 is low and I want to top it up but I think there is Synthetic fluid in there. The car has been sitting for 10 years and I don't remember what was put in there when it was serviced 15 years ago. Would I cause serious harm if I put synthetic fluid in a tranny with...

Last night at the New Years party another car guy and I had been talking about various topics relating to cars. He brought up something I found to be pretty interesting or worthy to post up in a new thread here :hehehe: He spoke about using a quart of transmission fluid with your oil. Check...