An upgraded air filter won’t do anything in regards to more power. Even a properly routed cold air intake will see negligible power gains. The best you can do is give it a proper tune up with spark plugs/wires, an oil change, and coolant flush. This ensures your engine is as tip top as it can be.
Even a drain and fill might make you lose friction material if it’s a normal transmission. Not sure about cvts.
No but at that mileage I would just continue driving the car if there aren’t any problems. If you try to service it now you have a decent chance of grenading your transmission.
Don’t buy a reman anyway, they’re usually junk. I’d vote for finding an Accord with a rear end collision or similar so you know it was in working condition before being wrecked and pull its rack.
No, clutch kits usually don’t come with a new slave. And yes it’s more than likely your slave has gone bad if the pedal has lost pressure. Good thing is that slaves are cheap, bad thing is yours is most likely internal so they’ll have to pull the transmission out again to replace it.
Please do not use stop leak products, It will only further damage your engine. If the car is otherwise in good condition it’s probably just best to fix the seal that is bad, and any other seals/parts that would need attention while they’re already in there and have it taken apart.
Bleed all, starting with the rear passenger drum. Replaced the entire braking system in my 4runner and didn’t run into any issues.
Is there proof of an engine/transmission being installed? What’s the reason? LS/LT based engines and the drivetrain in general are as solid as they come so the trucks lifespan is going to be based on the rest of the truck, mainly bushings, bearings, rubber. I’d imagine that truck going to 200-250k before needing an overhaul.
A new Toyota, and some new Hondas.
When my 400k mile 99 4runner finally retired, I just bought a new 4runner for peace of mind.