Approx what torque are you using? I stop at about 25 lb ft and all's good.Yep, looks like the same 10mm aluminum crush washer I got from Scamazon. Works great. The OE Toyota one I took off, ( which I had just installed 1k prior), was already " loose", and I had the rubber/felt part facing the pan. Yes, the pan is wavy. The OE washer had a wave in it. You'd think something as simple as an oil pan, Toyota would get it right. The consequences of that plug coming out while driving would be quite costly, to say the least...But it seems not everybody is having this problem. Hit and miss type thing. I have 2 Toyota's, with the 2AZ-FE engine, with this problem.
My question was approx how much torque are you using, by feel or whatever. Toyota washers are fine; there must be some other factor. Hundreds of millions have to have been successfully used over the years.I don't torque, go by feel. After almost 50 years, you get a feeling when to stop. Those Nissan washers are the BOMB ! There a PITA to get back off though, sometimes, especially if you have a customer who has been using the same washer over and over.
I own a new Toyota and love it. It is ashamed they can engineer and build engines capable of running over 300,000 miles with proper maintenance but are having problems with engine oil drain plugs and gaskets! LOL!I have two (2) Camry's...both with the 4-cylinder engine. I change oil in both of them ~ 2x per year. I use the Toyota oil drain plug gasket pictured below and torque both drain plugs to 18 ft-lbs per Toyota spec. Over the past 2 years, I've noticed that both drain plugs are finger tight at best when I change the oil. I've noticed that the coating or whatever is on both sides of these aluminum washers disintegrates...mostly on the side of the gasket that is in touch with the oil pan. FWIW both oil pans are metal. The drain plugs are both the original and are perfect. You can hand tighten both bolts snug and then tighten with the torque wrench. FWIW I have two different torque wrenches I've used to make sure there is not a problem with the amount of torque applied. I have in the past bought packets of washers from a Toyota online parts dealer and really haven't had an issue. I went to my local dealer and bought a few washers for the most recent change to see if I would get a different result....same problem. Within a week both drain plugs have loosened to where you need to tighten the bolts another 1/4 turn or more. Thankfully neither drain plug has completely come out. Generally they seem to about one to two turns to being hand tight.
Question...has any one experienced this problem using TOYOTA drain plug gaskets? For reference here is a picture of the gasket and the Toyota p/n.
P/N 90430-12031
View attachment 285725
There is no problem to be solved. If the plug loosens up with a properly tightened drain plug and Genuine Toyota drain plug gasket, you need a new oil pan. It is that simple.I own a new Toyota and love it. It is ashamed they can engineer and build engines capable of running over 300,000 miles with proper maintenance but are having problems with engine oil drain plugs and gaskets! LOL!
I haven't used or ordered these for my new Toyota yet, so I don't know if they are junk or not, but the plug is magnetic. I will post an Amazon link to both the plug and gaskets here, if you are interested. There is also this thing out there called a "Fumoto Valve" drain plug you can look up if you are interested.
https://www.amazon.com/dp/B07YVKL6D...Z867P9ED7&ref_=list_c_wl_lv_ov_lig_dp_it&th=1
https://www.amazon.com/dp/B09NF4Y9C...867P9ED7&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it
Man, you are probably right, but I bet that job is more than a $10.00 bill. It sucks.There is no problem to be solved. If the plug loosens up with a properly tightened drain plug and Genuine Toyota drain plug gasket, you need a new oil pan. It is that simple.
Steel bends and warps over time with regular care? Maybe if it gets hit. My fleet of old Mercedes Diesels that have had high mileage and use steel oil pans might disagree with this. They have zero issues and I’ve had some tight drain plugs in them.I'm not knocking Toyota oil pan washers at all. It's more of a probability that my old oil pans, ( 06' & 03' ), have warped a bit where the bolt seats on the pan. I have steel pans. I don't know what Toyota uses nowadays. Is it still steel, is it aluminum ? I can't answer that. Honda has been using aluminum pans for quite some time, other manufacturer's still use steel. Steel warps, bends over time. I am not the original owner of my 2 Toyota's. I don't know who's been under there. But, on a personal level, I found a solution. Using just plain 10mm aluminum crush washers work for MY particular situation. I put new drain bolts and these plain aluminum 10mm crush washers, and it worked. Just happy the pan threads are not stripped out. They are quite old. Yes Critic, I agree with you 110%. New pans will solve the problem.