I have not read read that thread. No way Jim could go over each manufacturer, each fluid type, so assume he's setting a general guideline across manufacturers. This is a drill down for the 12 Camry transmission. At 50k I'm far below what Toyota states for a fluid change (lifetime). My own Toyota experience... Never replaced a transmission at any mileage, never replaced the screen filter, never opened one up to look. Just drain and fills every year/every other year with OE fluid. Add online complaints. Relatively few, most are neglected drains. So there's no contradiction, just Toyota specific drain milestones which differ some. I think he's fine to 50k, he can open it up an have a look if he wants to be reassured.
Originally Posted By: doitmyself
Respected member Jim Allen provided data in a thread here stating that the majority of new transmission particulate production is in the first 10 - 20 thousand miles (can't remember the number) and the most important fluid change is done at this low mileage (again, can't remember the number). Leaky Seals, you are contradicting this data and saying that today's transmissions run cleaner from the start and don't require an early change. What are we to believe?? Maybe Jim will pipe in here??