2.7L RWD - Drain and Fill or Flush?

Hey everyone, new here and I’ve been looking around getting lots of mixed responses, most of the threads I’ve found have to do with the V6. I own a 2022 SR with the 2.7. It’s only got ~14k miles but was a previous fleet vehicle, so I tried to do all the maintenance (oil, filter, engine and cabin air filters, tire rotation, the usual things you’d expect not to be done by the previous owner).

Kinda planning ahead, I was thinking about doing my differential and tranny at 30k. I was wondering if I should do a full flush or just a drain and fill? I hear things about not flushing because it may cause more problems, but usually that’s on higher mileage vehicles.

If I start early what should I be doing? The manual says 60k, but I always like to go about half what the manual says to make my cars last longer.

Thanks

 

My opinion (and you are going to get many) - Do the diffs at 30K. Wait on the transmission and just to a couple drain and fills at 50K - 75K miles. Now, if the truck shows signs of abuse or towing, you might consider doing the transmission earlier. But, no need for a 'flush' on a new and well maintained transmission - just drain and fill.

 

Thanks for the reply. This may sound like a stupid question, but on my truck, since it’s not 4x4, do I only have the rear differential? Definitely no towing, there is no signs of the previous owner towing anything with this truck (no hitch, no ball in the bumper, no tow hookups). I don’t plan to do any towing either, very light duty stuff (thus the reason for the 2wd).

thanks for the reply, appreciate any tips and advice to keep this baby running until the frame rots out (yes I did fluid film too).

 

Yep, you only need to worry about the rear diff then. Other tips would be to change the rad fluid before 100K. I would do it at 75K or so. Just flush and refill with Toyota fluid. Don't use aftermarket fluids there or the transmission. Drive it easy, don't abuse it and you have a truck that will take you places for many years.

 

Thanks again.
So rear diff at 30k, Transmission drain & fill and radiator flush 60k? Should I be doing the differential every 30k? Probably do all 3 at 60 and do the diff at 30. It’ll take me a VERY long time to hit 60k, I’ll maybe put 5k a year on this truck, but you never know where life will take ya. I foresee that being a solid 8 years out, if not more.

 

if the miles are low and you change the coolant at 50k you do not need to use a flush product

replacing the coolant is to prevent it sitting in there worn out being discolored rusty and dirty

flush is for the guy who's 200k on 1 oil change, motor is knocking, and goes "well doesn't hurt to try this can from the store" that won't work

or sometimes purchasing used with unknown service history

 

Got it, so a drain and fill/top off is the way to go?

excuse my ignorance, but when you do a drain and fill do you replace all the fluid with fresh, just not flushing out the system?

 

there's nothing to flush it's low miles