Been on the road for about a month in my '87 D21 V6 Hardbody converted RV
Have been searching for weeks for a replacement air relief plug for the coolant system, located just after the thermostat housing. The original air relief plug is larger than most available today and as it was made in plastic it has now 32 years later cracked.
Have the situation temporarily secured with sealant, however need to find this air relief plug sooner than later!
Any pointers or advice on where to look would be greatly appreciated
