Regarding timing belt, I know some belts that go can cause the valves to freeze up etc... Do you know if the belt on a 97 or newer is the type that could cause such damage? I'm planning on doing it sometime this summer, but would hate to wait and end up paying major bucks to repair/replace the engine.

Lastly, perhaps this should be another topic, but has anyone rec'd a letter from Lexus talking about a sludge- problem in engines caused by people who don't get oil changes often enough? I got a letter recently, kinda cool essentially it says they'll cover my '97 engine until 2007.

Sorry, one more thing, at this high of mileage is a bad idea to now start using synthetic oil?

 

Another Question, how often should the water pump be replaced?

 

On the 97 ES the engine is not interferrence engine( if the timing belt break it won't bend the valve) , but it recommend at 90-120K depending on the dealer. If you're gonna do the timing belt please do the water pump and seal at the same time. I mean you're already there and just a few more step you can R+R the water pump.
If you're taking care of your car and change oil regularly(3-5K), then don't worry about it.

 

I got that letter after purchase of my Lex. I think it is to cover their azz. It explains to the owner that they will cover the cost if oil gelling damages your engine. The also make a very strong point throughout the letter reminding you, the owner, to keep up with "regular maintenance" and refer you to the Scheduled Maintenance Guide.

I think if you read between the lines, it says we will damage from cover oil gelling if you can prove to us that you had your oil changed at the suggested intervals (at least every 5k for the ES300).

Toyota sends a similar letter as well as Dodge.

steviej

 

how long do they extend the warranty ? The basic power train is 6/70k .

 

Right, and if you bought a pre-owned lexus from Lexus, they certify it to 100k miles or 3 years from your certified purchase. This letter covers the engine even beyond the certified warranty.