When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I'm preparing a 69 coupe for paint. I noticed what appeared to be a splash of oil on the doors around the door handle. No problem I thought as I was de-waxing and cleaning the car as the first step. A day later I noticed the spots had returned. Come to find out the owner had liberally sprayed a lubricating or penetrating oil inside the door in the latch area. This lubricant is seeping through the fiberglass and comming through the paint on the exterior of the surface that I need to paint soon !!! What to do??
I'm preparing a 69 coupe for paint. I noticed what appeared to be a splash of oil on the doors around the door handle. No problem I thought as I was de-waxing and cleaning the car as the first step. A day later I noticed the spots had returned. Come to find out the owner had liberally sprayed a lubricating or penetrating oil inside the door in the latch area. This lubricant is seeping through the fiberglass and comming through the paint on the exterior of the surface that I need to paint soon !!! What to do??
The EXACT same thing happened to me (OK, I'll fess up, I did it, trying to remove the door lock cylinder retainer, with copious amounts of Liquid Wrench)
I soaked and soaked and soaked in degreaser (Simple Green among others), then I sanded and sanded and sanded. Then degreased some more!!! Finally it stopped seeping through. Really scared me. Anyway, I sealed, primered and painted. So far (6 months) no evidence of the paint lifting.
Continue efforts with the wax and silicone remover. Strongly recommend you don't sand the area until all residue is removed. Sanding will provide grooves for the oil/lubricant/contaminate to remain on the surfaces.
Comparative to bleeding the brakes; don't give up, just continue with the wax and silicone remover over and over again until oil is completely removed. Any trace left behind is guaranteed to result in paint adherence issues.
could he use a degreaser like brake clean? that stuff will make all oils just go away
Yes, any degreaser is going to help. It can be applied to the outside as well as the inside of the panel. The concern is when spraying excessive amounts of degreaser on the panel that it runs down the panel and brings the contaminate further down the panel.
It is extremely important the the last cleaning efforts be the wax and silicone remover to completely clean the panel before sanding.
Don't dilute the area any further with cleaners and solvents.
Since you have the time, make a small pouch over the area inside and out and use talcum powder, cornstarch or baby powder to absorb the impregnated oils. Leave overnite and may require multiple applications.
Only after that, you can use a strong dish detergent like Joy or Dawn and use multiple brushings and rinsings.
Then you can use alcohol, acetone, laquer thinner or even starter fluid to final clean and sand for a sealing primer.
As mentioned above, don't sand until the final steps.
I had a similiar issue with mine before spraying and it kept coming back. I scrubbed, sanded, used thinner, etc. Its all painted now but only 6 months and no sunlight yet... so I have no real results.
But - I was warned the lacquer - especially acetone would not be good on the glue within the fiberglass. As we all know acetone is about the only thing that will get sticky resin off your hands
I'm back with this old thread. Well, baby powder and all steps thereafter didn't work on these dooors. I removed the side glass and the owner took them home to experiment. He soaked the complete doors in a tub filled with a strong degreaser. Dried, heated and degreased. The oil spots still came back, but not as bad.
How about this? I set them up horizontal, heat them up, degrease and shoot with a 2 part primer. Or do I use a sealer? Will that seal the oil below and possibly work. Thanks for help.
I bled my brakes using silicone brake fluid. Keep in mind my body is bare fiberglass. It's amazing how this stuff ends up in spots you never touched. Anyhow...I was given a # of a paint specialist/rep and spoke to him. His advice on previous experiences he had was to use a mild dergreasing soap or detergent. He did say it will take a while to get out because you're only washing away the surface residue and it will resurface. It will take multiple washing and drying cycles before it is all drawn out. I washed it a couple of times and the water didn't bead like it had silicone on it. I will do it a few more times before I get the car primed and painted. Does this help?
In dispair, I tried one of our household products - K2R. This is a spot lifter intended for fabrics. It is a spray that has a solvent together with diatomaceous earth. The solvent id one used by dry-cleaners and initself will break down oils. The diatomaceous earth acts like the talcum/cornstarch and lifts/retains any oily residue. Spray it on, wait 5 minutes, duat it off and repeat. Let the area rest a couple of days and repeat the cycle. It works.
A coat of epoxy primer over the entire skin should seal most ills. Clean and prep as stated in earlier posts. Use your regular primer over the epoxy before paint.
I'm back with this old thread. Well, baby powder and all steps thereafter didn't work on these dooors. I removed the side glass and the owner took them home to experiment. He soaked the complete doors in a tub filled with a strong degreaser. Dried, heated and degreased. The oil spots still came back, but not as bad.
How about this? I set them up horizontal, heat them up, degrease and shoot with a 2 part primer. Or do I use a sealer? Will that seal the oil below and possibly work. Thanks for help.
Update. After getting these back from the owner I set them up, horizontal, smooth side up. I used a Dupont de-waxer and washed them twice. I let them sit in a warm place and................. things are looking a whole lot better! So much so, I am tempted to clean and shoot with epoxy primer as mentioned above.
However, I like the "oil eating" products talked about in this thread, none of which are avaliable here. I am searching my area for a comparable product