Date registered: Nov 2014
Vehicle: 1990 350SDL, "Grandpa's Roadster" Project Car
Location: New Hampshire
Mentioned: 9 Post(s)
Quoted: 824 Post(s)
IMHO. replacing the radiator would be a waste of money at this point. In 50 years of experience, overheating in traffic has 90% of the time been airflow and overheating on the highway has 90% of the time been been cooling capacity. The kicker is there has been 0% crossover.
Get the fans working correctly first. If that doesn't fix it, I'll be surprised. Or, change the radiator. If that fixes it, I'll be surprised...
(Hint: we already have good reason to suspect the fans don't work right. He hit 110 and didn't notice the fan clutch locking up.)
Last edited by John350; 08-18-2018 at 07:21 PM.