03 Navigator Cold Weather Operation
Just got a 03 Navigator (project) with 5.4 4 valve engine with 116K that suspension and some options were inop. After shop diagnosed and replaced fuse box, air compressor relay and door switch the air...
Forum Discussion
Be sure to flush the coolant system, as a 2003 will have HOATs (Hybrid Organic
Acid Technology) coolant...which does NOT like O2/Air in the system
What did you top up the coolant system with?
Since it is 11 years old and ask if you know the previous owner(s) ever flushed?
Suggest to be safe and flush with whatever your manual says (HOATs) since you have
opened up the system to expose O2/Air into it.
Always glad to hear someone's DIY success stories !!!
Acid Technology) coolant...which does NOT like O2/Air in the system
What did you top up the coolant system with?
Since it is 11 years old and ask if you know the previous owner(s) ever flushed?
Suggest to be safe and flush with whatever your manual says (HOATs) since you have
opened up the system to expose O2/Air into it.
Always glad to hear someone's DIY success stories !!!
