I hope that I am posting this question in the correct area and it was not answered somewhere else... I have a 2000 Tacoma (90,000 miles) with the 3rz motor and it recently has developed an oil leak and I thought I would pick your brains about it.
Recently I have noticed that on the passenger side of the block right towards the front (between the water pump and the exhaust manifold, more or less) I notice what appears to be oil seepage all the way down the side of the block. It seems to start right between the block and the head because there is no oil on the head at all. It does not seem to be profuse or anything, but it is damp. The truck has great compression and runs very strong. Are there oil passages that run through that area from the block to the head? Could my head gasket be going bad or could it be something else? Is it possible that the gasket can leak out the side like that or could it be from the timing area. Which is more likely?
The only thing that I can say about it is that I have in the past 5000 miles pulled a 4 wheeler trailer on the freeway a few times. I was not beating the thing, but I'm sure the head pressures where up there . It did great though.
Thanks so much for your input!