Close
Car Questions
RepairPal is your advocate for car care advice and guidance

Is power flush auto transmission over 100K miles bad?

(1999 Jeep Cherokee)
in Milford, OH on June 10, 2010
My Mechanic told me that power flushing an automatic transmission with over 100K miles will cause slippage in the transmission because "the gunk is what is holding certain parts together and is you remove the gunk they will not work like it used to" Is this true??? or is it he just does not have the equipment to do a power flush and he just does not want to loose an easy $100 ??
Displaying 1 answers & 0 comments
Popular Answer
on June 10, 2010
He's probably right as most transmission mechanics say that if the trans was not serviced every 30,000 or so miles (fluid and filter) then don't power flush the system as it will knock the varnish and debris loose and could cause problems
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide. Learn more

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
The colder it gets the colder the heat is in the car. Only comes out Luke warm. Thermostat is new, coolant level/qual...
fuel filter (external) was changed at the same time by a repair shop
Didn't find what you were looking for?