Hi Scotty,
I bought a 2015 Ford F150, 5L, 6 speed manual transmission with 102,000 miles (162,000 km) and I don’t know the history of the truck. Is the mileage to high at this point to change the transmission oil? Will I do the transmission harm? Many F150 owners tell me to change the oil & filter but do NOT flush the transmission.
Same thing with my 2018 Ford Explorer that I just purchase with 3.5L, 6 speed transmission with 96,000 miles; should I change the oil and filter and NOT flush?
Your opinion is greatly appreciated. 😎
Thanks
mileage to high at this point to change the transmission oil
There is no such thing for manuals. They have dry clutches. Change the gear oil any time.
There's nothing to flush either. Just drain & fill.
It's an automatic transmission; my mistake for writing manual.
It's automatic; my mistake for writing manual.
See the FAQ for details on fluid changes in automatic transmissions.
Is the mileage to high at this point to change the transmission oil?
Not with a manual transmission.
It's automatic; my mistake for writing manual.
It's an automatic transmission
1- Never flush an automatic transmission. You risk forcing debris into the valve body.
2- Changing anything about a never serviced high mileage transmission is risky. It's the owner's gamble.
Helpful information aiding in such a decision is in the FAQs under 'Maintenance', 'Should I service my transmission?'
