I have a 2006 swift challenger & over the winter months tree sap, etc are stuck to the panels. Can anyone recommend the best way to get these marks off, i am worried if i use t-cut it would damage the finish.
You are right to worry about T-cut and other polishes, they contain varying grades of abrasives - and will remove surface paint.
You will be better served by dabbing the sappy deposits with an orange oil cleaner until they soften and dissolve (or white spirit) - whatever you use check for compatibility first - you don't want to dissolve the van.
Then after cleaning the van, use a good quality wax to seal the paint surface.
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