I'm with [MENTION=134872]The Count[/MENTION] on this one. How bad is the leak? If it's not that bad, just let it go and add oil when you need to.
Your dealer quotes in Oklahoma are super fair by the way. In the California Bay Area, the Toyota dealers bend you over hard, no lube and no reach around. To give you an example, after I finished doing the valve cover gasket job, I called my local dealership and got a quote to see how much they would have charged me. I was quoted around $1000. Their labor rates are $150/hr and they cut you no slack whatsoever. And, every time I've been there the service department is jam packed with people and vehicles so they are making a killing. Even the independent shops in my area are expensive but you can definitely find better deals staying away from the dealerships.
In your search to locate the source of the leak, I would spray a bunch of engine cleaner under your rig and then go to one of those coin-op car washes and spray it clean as best you can. Maybe then you can find the source of the leak.
[MENTION=92510]Ol'Blue[/MENTION] suggestion sounds good. I didn't even know you could add a dye to your oil. Interesting.
In my limited experience, I have found that small town dealers are less likely to be crooks and more likely to be responsive and responsible. Unlike in the big city, they have to see their customers at the grocery store and the local bar.
How long have you been using the high mileage oil? I have a neighbor who got a 1994 Ford Ranger for free for his 16 year old son. It had been sitting for four years and after changing the oil in it the rear main was leaking pretty bad but we decided to hold off on changing it until the clutch gives up the ghost. Three months later and no spots in the driveway.
Take some undercarriage pics if you can.
Yeah, that could be either the rear main seal or the back of the oil pan. My money would be on the rear main, but I would remove the torque converter shield and check again before I was sure.
How do you remove the torque converter shield? And how can you tell if it is leaking from the seal or from the oil pan once you get it off?
There should be some small diameter bolts that bolt it to the transmission's bellhousing. They may be kind of a PITA to get out, I can't remember the last time I took one off a third gen. Once you remove it, re-clean the back area of the oil pan where the leak is with brake cleaner. Start it up and watch to see if the leak starts just above the oil pan, you may need a mirror.
If it's a decent sized leak, while the engine is running, chances are it's the rear main seal. It's under oil pressure while running, and the pan gasket is not. Pan gaskets tend to "seep" more than "run or drip", especially while parked and idling.
This might sound dumb, but I'm going to ask to make sure I'm being thorough and understand to the fullest. Once I get the shield off I can run it with the shield off?
I'm just trying to make sure I'm not replacing a $600 rear main seal if I don't have to, considering it's starting to look like it's time for new cv boots.
$600 for the rear main seal? Pay the dealer. My dealer charges $150 hr.
Yes, you can run it without the torque converter shield on.