Here's situation... coolant been in 4 yrs now, so time to change. Very little miles, maybe 100 miles in last 2 years due to wife cant get in truck because of medical problems. And I cant leave her attended to drive it around to get properly warmed up. And license tabs are also expired now. (Hell of a mess I'm in)
So im thinking about a coolant system test (head gasket leak test) I'll have to idle about 1000 rpm with exhaust brake on. Never since 2005 when we got our 2001 excessively idled. Or should I forget pressure test, and just change coolant? Or idling to get up temps enough for test is OK?
I normally change coolant every 4 yrs.
What would you do?
Thanks for replying.