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1. Early morning temperature in SIngapore never gets lower than 26-28 degrees C.
2. The oil used is fully synthetic 10-50W
3.The oil is pumped through the primary oil cooler, into the oil filter console, into the oil filter, onto the tube that brings it to the front oil cooler, and then back to the oil tank (where in a 1972 car the oil filler cap and dipstick are located, and then back into the engine crankcase.
4. The themostat (as I understood it) is to close the flow to the front oil cooler until the engine is warm enough to need more cooling, whereby the valve opens to allow flow of oil to the secondary oil cooler in front. When opened ALL the time (being without a thermostat to close/open the valve) pressure within the oil filter system should be lower.
5. The relief valve in the filter housing actually opens when the pressure within the oil filter is too high, and it allows some oil to BYPASS the filter and proceed straight to the front oil cooler
WHich is why I suspect this relieve valve is not opening or not opening enough when the pressure builds up, so all the oil pumped by the oil pump in the engine is forced INTO the oil filter and causing it to expand and subsequently pop.
Thanks again for the help. Billy
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