The Triumph Dolomite Club - Discussion Forum

My MGB GT was painted with cellulose about 2 years ago and now has some deep stains on the bonnet. The paint supplier says are caused by the sun being magnified through rain drops. As I have painted my 1300fwd in cellulose I asked him how I can prevent it in the future. He said I needed to use a good quality solid wax, not this liquid 'Turtle' type and put on 3 or 4 coats of it.
Has anyone experienced this problem and can they recommend a wax brand?
Many Thanks
Pete

Assuming you have sufficient paint left. I would use a fine swirl removal polish to remove all old wax and road film. Use a sponge applicator. Then use a Carnuba wax polish to get the shine back. You can then continue to use carnuba wax to build up a protective coating over the paint. You'll still get round marks on the surface...its usually dissolved minerals in the water that do this. Depending on how fussy you can dry off any water after washing. Using de mineralised water works well and if you have a condensing tumble dryer try collect the water from that as its much less likely to leave evaporative deposits.

Hi the classic car trade use a polish called CONCEPT available in gallon tins from good motor factors. Works wonders i have used it for several years with great results. Tractor Boy

as a former window cleaner (now retired at 36) I know all about clean water systems. I kept one of my old purifiers and rinse my car with that as there is 0 parts per million of crap in the water. you can leave it after washing and I guarantee absolutely no water marks.
ask your local window cleaner for a demo.
pure water is the way of the future.

My personal fave is autoglym hd wax. Expensive but very good wax. Don't confuse wax with polish. Most polish offers very little protection. I also like autoglym super resin polish as it polishes a bit and offers some protection but doesn't last as long as hd wax but is about one third the price.

epcot_pete wrote:My MGB GT was painted with cellulose about 2 years ago and now has some deep stains on the bonnet. The paint supplier says are caused by the sun being magnified through rain drops.
Has anyone experienced this problem and can they recommend a wax brand?
Many Thanks
Pete

Interesting ! Your MG wouldn't be painted in a dark green cellulose would it ? Mine is in paint code 75 and has exactly this problem after a respray 7 years ago. It does seem to be a green paint problem as the white paint on the 1850 ( or the Jaguar titanium) don't have this problem.
I use T-cut every Spring followed by Simonize wax polish. And every time it rains, the rain forms small globules of water and on chamois leathering it off , the circular discolourations are very noticeable. Over the course of the Summer months these merge to form a dull matt green finish. So more T-cut.
Will any wax polish protect from this effect ?
Is it the paint mix which is wrong I wonder ?
Tony.

My Brooklands Green 1500HL had a leaf shape on the boot where I left a wet leaf stuck on there too long.. it wouldn't polish out at all!

My MG colour is like a burgundy so like other darkish colours it seems to stand out. I am sure I mixed the paint 50/50 and did the final coat 25/75 thinners as recommended, so I think I got that right. Before modern cars (God I sound old!) they were painted with cellulose, many black at one time, and I cannot remember this sort of problem. Acid rain......................?