rich r wrote:
Of course those of us that take our 4x4s through deep water have mechanical fuel pump diesel engines rather than petrol - no electricity needed once it's started, so it can be at the bottom of a lake and still run as long as the air intake is clear and the water pressure isn't too high on the exhaust
Dad and his mates clubbed together and bought a little old diesel tractor for boat launching to extend the time they could spend on boats between tides, since at low water the slope of the slipway wasn't steep enough to prevent a launch vehicle getting wet (previously they'd attached chains between a Landrover and boat trailers but you can't push on a chain and the slipway was bumpy towards the bottom). The tractor could go deep in the water no problem, which led to discussion with a fellow boat owner who had an old diesel 4x4 about the merits of diesels in the wet.. and his 4x4 already had a snorkel. Didn't know the guy was going to act on the info or might have brought up diff / gearbox / engine / brake fluid reservoir / battery breathers.. and car radios
It lived but needed some milky fluids changing, bloke reckoned it was probably more worrying being sat chest deep in a 4x4 cab with a roof overhead than sat on an open tractor that you could just float off if need be. On another occasion at the same peninsula 'resort' in Wales, I remember floating in a canoe above a car with it's lights still glowing on a spring tide, someone had tried to drive onto 'Shell Island' while the tied was coming in but the car had stalled and they'd had to abandon it
Nearly all cars were petrol then, dad reckoned he'd have made it in his Pug504 diesel (wouldn't have cut out while the water was still relatively shallow) but the saltwater wouldn't have done it a lot of good.
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