Has any one used diesel for there undercarriage on there car as a prevention for rust or cleaning etc ?.Have read mix reviews.
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I apply a mixture of used motor oil and gear oil in about 80:20 ratio. The gear oil stays longer but I doubt diesel may evaporate with time.
If you can find penetrating oil, used it first and then apply the oil.
Outta curiosity, what rust are you trying to prevent in UAE? I live in Texas and I don't treat the underside of my vehicles...nobody does here. I'd expect the same in UAE...
A few people I know that live in the rust belt area of the US (Michigan, Ohio, etc) use POR-15/fluid film yearly. It's a spray on undercoating that helps counter the salt mixture they use on the roads when iced. This is also why nobody in their right mind buys a vehicle from this area...
Holy Shiite - diesel for rust prevention? Used motor oil? How bout contaminating waterways? Wtf...
People use fluid film or krown for a reason: non-toxic.
I recently discovered this exact issue on my Kansas raised 100. Overall the frame is in phenomenal condition with hardly a speck of rust. However, on the driver side of that rear cross member I spotted a mass of bubbling rust and was able to flake off enough to poke through. I haven't tackled this yet, but my plan is to drill a new hole in the cross member near the frame then clean out the cross member and treat with the POR15 system. It is a messy process, and even more so upside down in an inclosed space, but I've had good luck with POR15 in the past. After that I had planned to annually treat with something like fluidfilm, but I may try lathering it with marine grease instead.Note: Look close at hole on far left of crossover frame rail above differential, it's still wet from final rinse and has just a bit of rust color. In this area just to left of this frame rail hole I'm finding different degrees of rust on every older rig. With some rigs that spent just it's first year in rust belt, I've been able too flake off or poke into rust in this area.
I apply a mixture of used motor oil and gear oil in about 80:20 ratio.
So I thought why not use a little marine grease on bare metal of nuts & bolts and call it a day. Well before I knew it I'd brushed & wipe 1/2 tub of marine grease on entire undercarriage (except body).
It looks great and the stuff doesn't wash off, even solvent has a hard time breaking marine grease down.
Cost $2.00 / 3 hours.
Toyota's weak spot RUST!
I had good results with this process last year:
I power washing, degreasing with a citrus cleaner and power washing again. Then wirer brush surface rust from nuts & bolts. After this cleaning process, I was unhappy with white film leftover from citrus cleaner and concerned with exposed bare metal I 'had wire brushed. Normally I get out a can of black paint, but was concerned with paint adhering to white film. Besides hate spray painting while on my back in close quarters.
So I thought why not use a little marine grease on bare metal of nuts & bolts and call it a day. Well before I knew it I'd brushed & wipe 1/2 tub of marine grease on entire undercarriage (except body).
It looks great and the stuff doesn't wash off, even solvent has a hard time breaking marine grease down.
Cost $2.00 / 3 hours.
After cleaning, wire brushing and before greasing:
View attachment 1407910
Note: Look close at hole on far left of crossover frame rail above differential, it's still wet from final rinse and has just a bit of rust color. In this area just to left of this frame rail hole I'm finding different degrees of rust on every older rig. With some rigs that spent just it's first year in rust belt, I've been able too flake off or poke into rust in this area.
Just after bushing on marine grease:
View attachment 1407914
View attachment 1407915
A few weeks after bushing & wiping on grease:
View attachment 1407919
View attachment 1407920
We don't have a big problem with rust in Colorado but moisture from rain, snow and constantly washing off road salts from undercarriage does have it's ill effects. So even here in Colorado I'm adding rust preventive to the inside of frame rails to my PM schedule. I'll be spraying fluid film or something like it inside frame rails.