I have 06, Camry, XLE, 4Cly, US made having 55K Miles.
I want to do a DIY project Titled "Change Transmission oil"
I have read Haynes Repair manual for my model of car.
First, do you really need to do this? What color is the fluid?
1) I am unclear about tranny oil pan GASKET. Please some one elaborate procedure on removing old/ installing new gasket?
Drain the transmission, loosen the bolts holding the pan and then remove them all so you can drop the pan. if the gasket hanks up, pull it off. If there is any crud left from the gasket, remove it using single edged razor blade. To install, but the gasket on the pan, push a couple bolts through on opposing ends to the gasket will line up, and proceed to install. Torgue all bolts slowly on oposite sides as you would a wheel or engine head.
2) Which brand of trans Oil is recommended for replacement? Which brand of filter is recommended? Buy from only Toyota dealership or stores like sears or pepboys okay?
What ATF does your manual, or the dealer for that matter, say to use? I think that year is T-IV, but I wouldn't trust that until I verified it with the owner's manual. If it meets the spec then it should be good. Filter should come from Toyota if you are replacing it.
3) Haynes manual recommends washing tranny oil pan with solvent. Will it do if I wipe the pan with clean towels?
No. You are guaranteed to leave crud in the pan from the towel, and that in turn will foul the system. You can use a towel or something to clean with, but when done rinse it with kerosene or similar and allow to air dry.
4) Is metal crush gasket replacement part of this job?
On the drain plug? Yes.
5) Following procedure, is it a over kill?
Transmission Fluid Change
This is not overkill at all for a 2007 6 speed transmission. That's how it is done. You don't have the same car though.
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Radiator Flush
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1) Where can I dispose old radiator fluid after radiator flush.
At your closest hazardous waste disposal site. Since you cleverly identified yourself as living in the USA instead of a more specific location, like Denver, that's about all I can say on the subject.