It seems to be fairly common with most of the older vehicles I have owned. Even with a good cooling system flushed out and with a good thermostat, it takes a long time to get the needle up to the midway on the temp gauge. I'd say I have to drive 5-7 miles (with the radiator blocked off) to hit midway on the gauge when its 20-30 degrees. I've driven a newer ford transit van and they hit halfway within a mile and a half, with good heat in the vents. What is causing this disparity? What sort of tech has improved in the last 20 years to cause the engine to heat faster?

 

cast iron vs aluminum

 

Put the warmest thermostat you can find in there _ test it with your old one on the stove, you may find your old one is opening too soon.
The clutch fan should be quite noisy on first start up when it's cold out because the viscous coupling fluid is stiff.
If it's working properly the fluid will become warm and the fan will not move so much air.
A faulty clutch fan that's always turning will never allow an engine to warm up properly.

 

+1 ^^^ to all the above

If its Lima 4cyl engine they have ALOT of cast iron to warm up, so common complaint in northern climates with these engines
They generally don't even use the radiator at temps below 30deg
Blocking COLD air flow into engine bay really helps
You can also insulate the two heater hoses using the foam pipe insulation, thats one of the places heat is lost since it always has flow, its the water pump by-pass
Just need to do it where they are exposed to the cold air running from front to back of engine bay, so easy to access

 

It's a 93, 3 litre Ron.

 

i dont understand this. honestly i have no clue how a fan clutch even works so maybe thats part of the problem.

My thermostat is not opening too soon because i can pinpoint exactly when it does during the drive. the gauge rises up to midway, holds for a few moments, then it falls noticeably quick to the 1/4 mark