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JohnDoyle

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  • Lexus Model
    2004 RX330

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  1. Based on your input, I think I'll leave them in a while longer. Part of my motivation for changing them was to avoid them becoming corroded in place and impossible to remove without damaging the threads in the cylinder heads. I thought I should at least take them out and put some anti-seize on the threads...then I thought, if I have them out, might as well put new ones back in. It sort of goes against the grain to leave them in for so long, but I think I'll wait and reconsider at 60K. The car runs flawlessly now. I'll get a little experience putting plugs in my mother's '02 Camry V6, which is a similar arrangement, but with a larger hood opening and more room around that rear bank. Hers has 75K without a plug change, so I think the service is justified in that case. As always, thanks for your input. This makes me dread the upcoming 30K maintenance much less.
  2. I'm coming up to my 30K service on my '04 RX 330 and I'm considering replacing the spark plugs while I'm at it, even though they're not required at this mileage. The rear bank appears to be fairly inaccessible. The Haynes manual says remove upper intake manifold, wiper arms and wiper motor, along with some covers. Has anyone done this? Is it as bad as it looks or is it fairly straightforward. I'm a fairly experience DIYer and have always done my own maintenance, up to and including timing belts. This just struck me as a lot to tear down in order to reach the spark plugs. Any input would certainly be appreciated. I did attempt to search for this a couple of different ways, but didn't come up with any existing threads. Thanks to all for your help! John
  3. I see lots of posting about automatic transmission fluid and, while the importance of this can't be underestimated, what about the lubricant in the transfer case and differential of AWD vehicles? Do members replace the lubricant in those gearboxes regularly? What do you use? Toyota? Synthetic? Any thoughts or best practices? I was planning on draining both gearboxes and putting in Redline GL5 at 30K when I replace the transmission fluid. I'd like to hear your thoughts. John
  4. Brenda, shocks are unfortunately kind of a subjective item. With 44K on your car, wear is certainly a factor. The classic test for defective shocks is whether or not they are leaking and it appears that this is what your dealer is falling back on. 50,000 miles has been identified by some as a good benchmark for shock replacement. The problem with your shocks, diminished damping action, is something that occurs with wear and age. I don't know if you'll get the dealer to give you new shocks when they are considered by many to be a wear and tear item that must be periodically replaced. Could you admit that wear is a contributing factor and see if they'd share the cost with you or make some sort of good will contribution to the repair? You certainly have a valid argument that the car should be able to carry back seat passengers without bottoming out, but the dealer has a good argument that the shocks aren't defective if they aren't leaking. If you can't get the dealer to compromise, I'd look for a different shop and buy rear shocks there. Good luck to you! John
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