Both products work really well. The 303 can be used for a lot of detailing jobs. My major use is to wipe down all the rubber door seals after a wash.

i went to canadain tire and found the one can for a good price.
thanks repins for reminding me what the stuff was called.
then at costco .. as frank says ,, got 4 more for 12.99
now i have 5 cans of the stuff.
works awesome.