My double hose clamped and appropriately spec-'d rubber hose oil cooler hoses on my conversion are going strong after ~18k miles. I do inspect them every time I check the oil, check the clamps at every oil change, and have never had to tighten them.

Ideal solution? Nope, Mach4 has done that. But workable? Yes absolutely.

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617 swapped Toyota Pickup, 22-24 MPG, 50k miles on swap