FJ underbody rust

[AJP]

Get Krown done.....it is better than any thick applied undercoating...Fluid Film is good.. but Krown will drill holes and get it into all the body cavities and seams.....nothing will beat rust in S. Ontario but Krown will delay it significantly.

AJP

(living in north GTA)

 

[Michael1]

I would not use undercoating, or any other thick coating on the axle, transfer case, or engine. Those thick coatings act as a thermal barrier, and you could potentially overheat those components under high load in hot climates, particularly when trailer towing and/or long grades.

Michael

 

[HummerHater]

I had the dealership apply rust protection to my FJC at the time of purchase, but that wont help the rock and trail marks, i think the brush on rustoleum is the best idea ive heard so far just for those tiny marks. Having a very through clean up session after a weekend out on the trail or salty roads is gonna go a real long way, my 92 4x PU has held up very well with some prevetative cleaning, just wish i could say the same for that darn 3.0 eng.

Bobby