its simple, get yourself about 2 quarts of 10/40, an oil gun and go nuts, when complete a wire brush and some rubberized undercoaating will protect beautifuly, small microscopic holes arent a concern its when you can start seeing carpet underneith your car when it becomes a problem, microscopic meaning no larbger than tour index finger, iguess im stating the obvious but though id share, what with winter around the corner......mike

 

Huh? What are you saying? Spray with oil and then undercoating? It won't stick if oil is on the surface!

"microscopic meaning no larbger than tour index finger"
Again, What?

 

i have no idea what you just said.

 

Do you mean like 10/40 oil? NEVER!I SAID NEVER use oil to car corrosion protection. You can use oil to store guns but not cars. You see all proper undercoatings go liquid when they get mixed with oil and the thing you do is not protecting but giving good conditions for rust to have a party! What you do is lift car up and wash it with high pressure wash machine. Then gently sand blast of all rust you can find, even the smallest spots and weld if necessary. then i am not sure which comes first i guess it depends on materials you use, paint and proper rust protection coating. and voilá! Then just wash with normal running water underbody allways after and before winter. This is how professionals do it like the one who is going to do it to my Camaro. This way rusty underbody won't bother you for years, the man who does my car even gives 10 year rust free warranty!

 

I think he was trying to state use motor oil to soften up the 10+ years of road grime then wire brush it all off, clean the surface then spray down the rubborized coating.

The finger thing I think he's trying to say not to worry about the pin size holes in the floor pan, it's only when you can start to stick an index finger through when you start to have to think about it.... once you get to were you can put a foot through you really need to get something done. ;-)

Just my interpretation, Like everyone else I was kind of lost too.

I have some rust forming I'm thinking of doing a por-15 coat then a rubberized coat maybe.

 

this is why i keep my cars in the south.

 

high pressure washer on the underside and por15 everything

doesn't get any easier

 

unless the hole goes through to the carpet...then i wouldnt want to pressure wash it. wet carpet :nono:

 

true true but i was thinking more along the lines of rust prevention rather than repair.

 

NO NO NO iol in the frame rails not where undercoating is sprayed, i ve asked around and appearantly oil is the best thuing to use to stop corrosion in its tracks, you know all drain holes frame rail holes and what not, the floor pans get wirebrushed wiped than undercoated, lol oil+ undercoating on the smae surface??? that must have came out wrong im not a complete idiot guys

 

10 years ago our dodge mirada get oil as an undercoating. after few years there were many holes in floorpan and we sold it and today i guess that car has no floor to undercoat.all because that oil treatment

 

umm.. its not because of that undercoating.

its because you had no undercoating at all.


oil washes off.


lets think. put oil on this, then i'll drive thru some wet, abrasive snow...... the oil comes off and you get bare metal.

 

Oil as undercoating on the bottom of a car does not work very well.

Oil as a corrosion inhibitor INSIDE of rockers panels, joints where fenders meet wheel wells and inside of hollow frame rails works very well. It doesn't stick and stay where it is sprayed. Over time, it creeps to cover additional area and provide more protection. It provides very good protection in areas like these.

OneFine8t9 hit on this in is most recent post.

S-D

 

farmers used to do or may still do that oil treatment. fill the fenders and doors with oil and drive down a dirt road to clear it out the weep holes. i bet it makes a huge a mess. it does sound good for areas that you can't get at. i would just go and get it rust proofed that is ahy the drill all those holes every where. to get the coverage at all points.

 

like i said seems to do the job for me really well

 

what about grease from a grease gun?

 

I love living in AZ .