skpyle
Well-Known Member
- Joined
- May 5, 2013
- Messages
- 245
- Reaction score
- 7
- City, State
- Blacksburg, SC
- Year, Model & Trim Level
- 1999 Limited 5.0 AWD
Hello All!
I have a question on specifically just what is meant by 'flushing' the transmission.
Is it:
A) hooking up the fluid cooler lines to a dedicated automatic transmission flushing machine that drains the old fluid, runs solvent through it, then refills with new fluid
Or
B) draining as much fluid out of the transmission as possible via the pan and torque converter drain plug, replacing the filter, then refilling with new fluid
I ask because I have seen numerous references to flushing the transmission as a preventaitive measure. My 1999 5.0 AWD has the 4R70W, with 118,x.. miles on it. 3 1/2 years ago, at 89,x.. miles, the dealer serviced and flushed the transmission(wording is exactly how it was on the service work order).
I have a new filter and 13 quarts of Mobil Mercon V ready to be changed.
I come from the land of GM hydraulic (not solenoid controlled) automatic transmissions. Every 2 years, change the filter, add 5-7 quarts of good Dexron III and have a nice day.
The solenoid controlled 4R70W is a new animal to me. I understand it is a durable, reliable unit. However, reading between the lines, I get the impression that it is susceptible to problems from dirty oil.
So...will changing the fluid and filter suffice, or should I schedule a flush on the machine at the dealer?
Thanks for your time!
Seth K. Pyle
I have a question on specifically just what is meant by 'flushing' the transmission.
Is it:
A) hooking up the fluid cooler lines to a dedicated automatic transmission flushing machine that drains the old fluid, runs solvent through it, then refills with new fluid
Or
B) draining as much fluid out of the transmission as possible via the pan and torque converter drain plug, replacing the filter, then refilling with new fluid
I ask because I have seen numerous references to flushing the transmission as a preventaitive measure. My 1999 5.0 AWD has the 4R70W, with 118,x.. miles on it. 3 1/2 years ago, at 89,x.. miles, the dealer serviced and flushed the transmission(wording is exactly how it was on the service work order).
I have a new filter and 13 quarts of Mobil Mercon V ready to be changed.
I come from the land of GM hydraulic (not solenoid controlled) automatic transmissions. Every 2 years, change the filter, add 5-7 quarts of good Dexron III and have a nice day.
The solenoid controlled 4R70W is a new animal to me. I understand it is a durable, reliable unit. However, reading between the lines, I get the impression that it is susceptible to problems from dirty oil.
So...will changing the fluid and filter suffice, or should I schedule a flush on the machine at the dealer?
Thanks for your time!
Seth K. Pyle