200,000 Miles Maintenance

I made a excel transalation of the Toyota USA schedule, in order to see the patterns, get the "big picture". Then, considering the the official schedule stops at 120K miles, I extrapolated it, out to 240k. Both versions attached, plus pdf conversions.

200k miles for a first EGR cleaning is VERY late in the day. The cooler will be a bear. I'd prep for head gasket replacement as well.

The PCV valve can be cleaned or replaced. Considering it's about $10 (only buy from dealership), replacement is most expedient. If you do clean and reinstall, I'd use a non-permanent thread-lock on the threads, to avoid oil bloom on the block. Torque is 15 ft/lb.

Yes. My take, the best time to replace that is around 10k miles, then maybe once more around 100k.

Maybe another brake fluid change? FWIW, while Toyota USA says nothing in the schedule, Toyota Canada recommends to do this tri-yearly or 48k kms (~30k miles). Toyota USA recommends a more in-depth brake inspection at that same intereval

Check the links in my signature, there's tips on all of the above.

The main cure for that is to replace the piston rings (and pistons), with those spec'd in thie attached service bulletin. Or spring for a new short block, which will have the revised rings/pistons. The short block's a little over two grand USD.

 

Have you tried the Valvoline restore & protect oil, to get control of the oil burn issue? A few people have stated that lowered their oil consumption, assuming the problem is stuck oil control rings. If the oil burn is related to valve seal, that won't help.

Replace the ATF; it's a quick and easy job and should be done every 100K. It'll be unrecognizable when compared to new; with 200k on the clock and well worn out.

Depending on the humidity of your area, you should have the brake fluid checked for moisture and changed if the levels are too high. Some OEM's recommend 30K-60K mile replacement intervals, but Toyota is silent on that one.

Have the hybrid battery cooling fan assembly checked and cleaned out, to keep it from overheating.

Consider installing something to monitor the ECT, since you've been able to avoid the HG issue. The overtemp lamp only displays above 245F+, when normal operating temperatures are 190F-215F.

Hope this helps......

 

The inverter coolant was due for a replacement at 150k miles, so you are overdue for that.

 

Again, Toyota USA is silent, but Toyota Canada recommends tri-yearly or ~30k miles.

Which is interesting...

 

If the cylinders walls are still cross-hatched, with little or no scuffing, and particularly if you were to DIY, just replacing the pistons and rings is a LOT cheaper. Look at the tsb I post, that ends in ...169; it outlines the procedure and lists the parts numbers.

If DIY is out of the question, it's probably wiser/cheaper to just go with a short block replacement. Even then, look for a competent independent mechanic to do it.

Oh dear...

If you ask a dealership service department to "clean the EGR system", they will:

1. Refuse, they don't do cleaning.
2. Tell you not to bother till you get cold-start shakes and/or trouble code P0401 (insufficient EGR flow)
3. Propose to change EVERYTHING, which entails intake manifold (has EGR passages), the pipe joining IM to EGR valve, and the EGR cooler.

Maybe trumping all this, with 200k and EGR never cleaned, head gasket failure is very likely, and soon.

 

10K oil change intervals are bad for engine longevity, especially in a 3rd Gen Prius with low tension oil rings.

AMD, The Car Care Nut on YouTube says 5K OCIs, or even shorter, are the way to go if you want to hold on to your car.

SM-S936U ?