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Thus we take temperature readings on the head and block and egt’s. The few online videos I’ve found haven’t shown any real failures but they have suggested the hoses are the weeek point.

You are correct. I do not understand what is going on and that is why I’m interested to find out. I would assume that if oil and coolant did not have the same heat transfer characteristics that the two liquids would have measurably different temperatures. That one would cool an engine better...

Suzuki used oil coolers in that 1990’s and possibly early 2000’s. GS1100 drag bikes and subsequent street bikes had them. Might be able to take several different temperatures to get a good feel for it. A simple infrared thermometer readings at various points on the engine at idle, half and...

“Immediately” seems a bit over the top. I wouldn’t expect it to make it a thousand miles or anything but they do make oil lines as well. Then again I’ve seen a lot of of rubber transmission cooler lines that hold up on also. As for the heat transfer capabilities, that’s a bit interesting as...

Will be doing so in the next couple of weeks. I’ll be particularly interested in testing your theory that the liquid will offer poor heat transfer. It might not be exact but possibly in range. I’m in the Midwest and it’s getting cooler now so maybe if the vehicle and I survive I’ll be able to...

That doesn’t make much sense. With this design coolant can leak into the crankcase and the pump still continue to provide plenty of flow for cooling. And that’s the original point. If the pump is leaking something that isn’t damaging the internal engine components and the engine is...

Ever see an old diesel farm truck and ope the hood? See a lot of black sooty goo all over it? Notice how it didn’t erupt into flames?😂

The point? Only to see if I’d be able to sidestep having to replace the water pump in a situation where coolant is leaking past the seal and into the crankcase. Because if oil/diesel fuel gets into the crankcase, well that’s not nearly as destructive. You’re likely correct that the mixture...

In my experience with oil and diesel fuel leaking on a hot engine, and it’s been quite extensive over the years, fire is a small concern. Very small. It stinks like the apocalypse, but doesn’t often burn. ATF on the other hand…that’s a possible inferno. And in further searching, I may be in...

That does indeed sound like the best idea. I’ll probably still try it on a very cheap winter beater vehicle with a known coolant leak into the crankcase. I think it’ll have adequate heat transfer even if not optimal. The hoses are likely the prime failure points and I’m curious to see how...

When the Ford Flex first came out, I thought it was hideous. And maybe it is. But it’s grown on me. The thing that hasn’t grown on me is the timing chain run water pump. Engineering that often fails causing coolant to leak into the oil seems a big fail. But I keep thinking about getting a...