I try not to hammer the exhaust or the disc brakes, otherwise yes everything. shocks ,leaves, rear end. driveshafts, frame( in and out )I even go in the bed holes to get inside the quarter panels I spray inside the crimps on bottom of rockers anywhere I can, even the trailer hitch, transfer...
I am 155lbs medium frame so I slide around like a kid under there but I guess ramps couldn't hurt if your a bigger person. the stuff has its own smell so a paper mask some latex gloves maybe in order ? I didn't but like I said I move away from the flow of things !!ps best money spent on keeping...
6 cans of fluid film for the undercarriage and rockers steel bed and bumpers I'm ready for the nasty road treatment !!the sticky pre storm spray is the worst!! otherwise ready !!!
Wife drives a Infiniti they have spring water. warm brownies ,and chips cookies for the kids .they have someone drive car curbside and open door for you !! And it’s cleaner than it was !!
I bought 6 pack of spay cans on amazon for 50 something dollars and just used all six ! Got back side of both bumpers removed plugs and did inside quarter panels and then the whole underside frame shocks leaves tow package rockers soaked it up good ! No problems with sensors afterwords been...
bump pressure to 35 pounds give it a whirl. worked for me on my xlt . dealer had them set to 30psi Connecticut roads SUCK and 35 seemed to take them better for me!!