How long does a transmission last in a diesel truck?
How long does a transmission last in a diesel truck? Without service and maintenance, some transmissions can fail in as little as 100,000 miles. If you drive around 10-15,000 miles a year, your transmission could be down for the count in seven years! With care and service, transmissions can last 300,000 miles or more. When to change transmission fluid in Dodge Ram? I've got to put off the transmission fluid at least until next month. 60,000 miles is under the severe driving conditions, 120,000 for normal. I won't push it a whole lot longer, but don't mind waiting for a...