Hey everyone I need some help so I have an 08 mustang gt/cs it has 88 thousand miles. I’ve had the car for 5 months. Pretty much baby it and only drive from work to home. Recently i started to hear a grinding noise while driving. It starts only when in low RPM then it goes away quick. Took it to the dealer being it had a warranty. They said the transmission was bad. The synchros were bad. Ok cool warranty replaced the transmission with a refab. I get the car back clutch pedal and break pedal...

Grinding noise while driving