Originally Posted by MutantGarage
Thanks everyone,
I have a '95 Taco, same motor, something went wrong in the engine ventilation system and it completely filled with sludge/carbon , I pulled a valve cover and the only clear space was where the cam lobes pushed it aside, and I did not want the '04 to go that way. I'd just used regular dino oil on that, but I did buy it with 60K and replaced the motor at 197K.
I bought the 04 Taco off lease in '08 with about 100K and have been using the same oil (T6) , 240K now.
I also run the T6 in my 91 Ford 460 gas RV, it gets changed every 4000mi though, ie every time we take a long trip with it I start with fresh oil and filter.
I used to run Mobil-1 in it, but went to the T6 for the much higher Zinc and Detergent levels to protect the cam in the Big Block. It also spends a lot of it's time
at full throttle when climbing mountains, some times 30 minutes with the pedal to the floor and in 2nd gear, and even some times in 1st. The tacoma never sees that.
I also help out the RV with a 1/2 bottle of Rislone, keeps the lifters quiet, I'd had one start ticking at idle and that went away after the Rislone and coincidentally
changing the thermostat back to the spec 192F, it had been 180F. Dropped my cruise oil pressure from 80PSI to 75, but idle is still around 40.
I only got the tick after running for a couple hours at highway in the Texas heat, we'd hear it when we stopped for gas, bumping idle to 1000 would quiet it.
We also service a 55kW Generator with a 3.0L John Deere turbo with the T6. So it's kind of been my go-to oil.
It sounds like for the '04, I should jump over to a something like the Pennzoil for the next couple changes at 7500 and then go to a shorter cycle.
I was a little taken back by the varnish levels after looking at an Franklin airplane engine that has about 500hrs and is absolutely clean, but the oil is black.
(but that's a whole 'nother story
TD
What were the oil change intervals on the 95 that sludged up?