Hi Scotty, I have a 2000 Toyota Sienna 3L V6, currently with 170k miles. My dad left it and his…

Chris May

Hi Scotty, I have a 2000 Toyota Sienna 3L V6, currently with 170k miles. My dad left it and his whole garage of tools to me when he passed. We're the original owners and he used to do all the mechanic work on it. It has now started having a very slow oil leak since a couple months ago because I remembered wrong and put an extra qt of oil in during an oil change. The car ran for a week like that before I noticed a leak and realized what had happened when I checked the oil stick. I've since drained out a quart of oil and I used the UV dye trick to figure out where the leak is coming from and it looks to be coming from behind the timing belt cover so I suspect one or more of the seals may be the cause. I think my first step will be to try the AT 205 resealer you rave about and hope it stops. However, if it doesn't I will have to replace those seals. I think there are only 2x camshaft seals and 1x crankshaft seal behind there, but I'm not sure. Is there another crankshaft seal I'm missing? Should I also get an oil pump gasket and replace it just in case? And while I'm there should I do the full replacement of drive belts, timing-belt, pulleys, and water pump? Or maybe just the 2 drive belts and the timing-belt? All of it is still original equipment from when the van rolled out of the factory almost 2 decades ago. Sorry for the longwinded post and so many questions. Thanks in advance for your help.