This Summer I am planning on undercoating my T/A's underside. I plan on using POR15 and sanding down the little patches of rust that are in various spots too. My car is not very rusty underneath but I will probably have to drive during the winter in a year so I'm trying to gather information now on how to protect my car's underside. I've done a little bit of research but have found mixed opinions on the matter, the few questions I have regarding undercoating are as follows:
1. After using a degreaser/cleaner is it absolutely necessary to use the metal prep? or could I simply just apply the POR15, especially since I will be sanding down rust spots?
2. How much POR15 would I probably need to undercoat the floorpan and frame? I would also like to coat the axle and LCAs. Would a quart be enough to coat the underside?
Thanks
1. After using a degreaser/cleaner is it absolutely necessary to use the metal prep? or could I simply just apply the POR15, especially since I will be sanding down rust spots?
2. How much POR15 would I probably need to undercoat the floorpan and frame? I would also like to coat the axle and LCAs. Would a quart be enough to coat the underside?
Thanks