oil on vert top.
#2
Drifting
Tough Break. I have no clue. Based on my experience, if you do not get a response quickly you should re-post on the C6 General Discussion page b/c it gets a lot more traffic. If you have not done a search on the topic here, try that and at AutoGeeks forum. You might also check with Ragg Topp because they make one of the top selling cleaners and protective sprays.
#3
Instructor
I spoke to the vendor selling ragtop products at Carlisle this August and he told me that he bought a Vette with grease on the convertible top and got it out with repeated use of the ragtop cleaner. Spray the cleaner on, brush it a little, spray some more on etc. Maybe it was just a story but it's where I'd start.
#4
Former Vendor
I would suggest using the cleaning product from Ragtopp or 303 for Convertible Tops. You will likely want to apply outside of direct heat and sunlight and allow to dwell before removing. Some light agitation might be proper also.