tranny question

[double d truck]

A quick question looking for input
I have an 07 6.7 with a 6spd auto used for a hot shot business towing 4 days a week currently 130k plus miles looking for what type of tranny service I should do
One mechanic says tranny flush with better fluid reinstalled $150 plus fluid
Another mechanic says drop the pan replace the filter and replace the fluid $130
any suggestions from high mileage drivers out there
Not to worried about the cost just want the truck to keep running and pulling strong

__________________
07 6.7 4x4 2500 6 spd Auto, Inferno Red Big Horn Edition w/Leather Interior, egr/dpf came up missing, Pyro/Tranny/Boost Gauges, Araid drop in air filter, Smarty S67 sw3 vgt3, Reese Tow Beast Class V Reciever 14k Rated bumper pull w/weight distribution and dual cam sway on trailer, Air Lift Air Bags w/onboard compressor and single gauge, Extendable heated/power led signal/marker tow mirrors, Dual Beam Spot and Fog Lights

[MATTIAC]

I would suggest drop the pan method. its said that tranny flushes stir up the metal filings and send them into unwanted areas which in turn could cause tranny failure. some will beg to differ, just my personal experiences

__________________
08 Elect Blue 6.7 Mega. 3500. Sunroof. Leather.VES. 6" BDS Lift. 37x13.50-20 Toyo OC M/T on Eagle 064B wheels. B/W Pocket Flares. ProFlo 5" TBE w/ 6" Tip. H&S Black Maxx. S&B CAI. AMSOIL. Starter/Alarm. 6000k HID HI/LOW & Fogs. Kenwood DNX9140. 2x Pioneer Series Pro Subs Pwrd by a JL 500/1 v2. Autometer Triple Pillar w/ Boost & Rail Pressure.

[mattpopp]

IF you have never done a full flush I probably would not do a full flush now. Reason being is. The oil in your tranny is thicker then new fluid. The seals and orings are going to probably be a bit more wore then if you would have flushed every 50k miles. So if you replace all of the Oil which I think is about 4 gallons with new thinner oil you may start to feel some slippage. The thinner oil could bypass the worn seals and orings. So I would just drop the pan and change the two filters. Make sure the screw on is tight as a few guys burnt up there TC from the filter spinning off.

__________________
07 l 6.7 l .75 ton l MC l with stuff on it and a new head gasket
96 l 5.9 l .75 ton l EC l with not much on it

Be VERY skeptical of information you read on the internet.