150K mile "tune-up"

I am approaching 150K miles on my '06 Tacoma and want to get it serviced, in a major way. (06 TRD off road package) I hope to buy the parts and supplies myself and take it to a competent shop to perform the service.

First concern is; what might I be overlooking?

I plan to;

1) flush the transmission fluid for the second time. Insist on WS Toyota fluid or is Amsoil OK? If so which, specific, fluid should I look at? How much, 14 quarts?

2) Plugs. Much debate. What would you go with and why?

3) Serpentine belt. Still original, notice signs of dry rot. As mentioned will have someone doing the work and want to purchase the best one. Anyone better then others or particular brand better than others?

4) Transfer, diff fluids. I changed the rear diff fluid myself once but never the transfer or front. What would you recommend? I used (I think) 90wt Mobile but it was a while back.

5) What else am I overlooking? It seems as though wheel bearings, ball joints, other regular service intervals on this vehicle don't have the same needs as other vehicles.

I still change my own oil, mobil 1 always along with filter. I depend on this truck for work and has served me well. I just want to make sure I get the proper service done on it and don't want to miss anything nor do I want the mechanic to buy inferior products or lubricants. I hope/plan to keep this truck for a while and so far all has been good.

I am just looking for help in recommendations as to what preventive maintenance items you would perform approaching 150K miles and what, if any, specific manufactures you would prefer or stay from.

Thanks in advance.

 

OEM fluids and parts, including plugs and belts.

There is a lot of snake oil in plugs... E3 and the plugs with a capacitor built in are just that.
Platinum/Iridium is of no benefit on your 4.0... it does not gain power or MPG... they simply have a longer change interval.

 

What are the OEM plugs? NGK and denso?

 

Either one, generally Denso (factory was both on the V6), just buy them at the dealer.

 

2. Doesn't matter that much, but I use Denso because that is what the dealership uses

3. Toyota OEM. Not any more expensive than aftermarket if you buy it online, otherwise Goodyear.

4. A good full synthetic

$26 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75w-90, heavier in the rear if you tow a lot. I like Red Line and Amsoil, but Mobil 1 is good too. Amsoil is not any better than Red Line IMO. Also don't forget to replace the crush washers on the differentials (I think the front has one, but the back definitely does). I reused mine and it started to leak after 5k miles.

5. Check and replace as needed. Air filter maybe?

 

Brake fluid (suck the old fluid out of the reservoir, refill, then bleed the system to flush the new fluid through the entire system).

Coolant flush and replacement.

Check brakes front and rear (rear shoes may be getting close, front was probably done 50-75k ago and may be due again).

Inspect tire tread for chunking (I found a 1" long by 1/4" wide area in the center that had shed, revealing belt)

It's not a horrible idea to replace all exterior lamps.

 

sub'd..I'm at 170k and need to do some fluid flushes

 

Use mineral oil in rear diffs. Its a hot debate but im siding with mineral for that one. Oil heats up, turns to water, cushions gears less... ECGS said if i used Syn in my new diff, voids warrenty.

Also a good idea to scrub TB as well as clean off the MAF.

 

Doubt that....my dealer is gonna do a full amsoil swap in the front & rear diff & transfer case for me....no mention of a warranty issue..