Originally Posted By: LeakySeals
timeau - We know whats causing oil consumption in the 2AZ-FE, wrote about it. One teardown myself, followed several more online. Nothing to guess about. Valve seals or the same problem afflicting thousands of 98-02 1zz-fe 1.8L Toyota engines.
Valve seal is easy to diagnose. Start your car on morning and if you have a blue smoke, disappeared shortly, this is a valve seal. Otherwise see below.
Originally Posted By: LeakySeals
Clogged piston oil return holes. Of course when the holes clog, it will throw more oil on the rings, possibly making them stick. Unless you fix "why rings stick", you will continue to have problems no matter how many times you jump to the ring conclusion. Probably the real reason your rings stick on the Nissan. That, and believing the Russians
And why holes got clogged? Due to deposits. Oil can't go into it, got overheated on rings and rings are stuck. Point by a finger where is the logical gap. In other words you are showing me a sick person and pointing an a high temperature of his body as a reason of a sickness. But this is just a consequence, not a reason of a problem. This man got frozen a day before. See a difference?
Originally Posted By: LeakySeals
Here is a 2AZ-FE piston with 320k on the clock torn down for oil consumption. Oil used was Castrol syntec, a semi blend. He had to drill the holes out. It was the only thing wrong.
I can't get what you wanted to prove. My point is that SOME synthetic oils, being heated, leave deposits on a piston, including holes. Any objections?
Originally Posted By: LeakySeals
That Russian site suggesting syn is more volatile than conventional has been discussed
Really? Seems I lost an ability to read Russian
Where is it written? Please, copy/paste this phrase
Originally Posted By: LeakySeals
testing method debunked many times by people on here that know oil better than I ever will. Really don't want to talk about it again. Post what you wrote in the forum, watch what happens.
These are just nice politician words. Please, use technical language. For example:
1. Something here
2. Something there... etc.
Originally Posted By: LeakySeals
What we do know is there is a high complaint rate for oil consumption on Toyotas, especially this engine. Oil used prior to, or when consumption started is dino 90% of the time. Some dinos more than others. People switch to syn to try to resolve it. By then its usually too late, holes are clogged. Thats the part your missing. The last thing they want to do is go back.
I am repeating my question again. What was the reason that holes got clogged that early? (on less than 100k miles) What you had pointed to is 320k, very respectful mileage. Even mineral oil can be a reason on this mileage. But not on 100k.
Originally Posted By: LeakySeals
And lastly, I've been using M1 HM for 130k on the old Camry in my sig. No guessing here either. @10k intervals. So I know its not making things worse, quite the opposite. If it were I would stop using it.
Wait a little bit more and don't tell than that I did not warn you