*jmpet626: adding both would not result to a lot of difference, you can barely notice it. 845 is actually already a good wax in terms of looks, pretty much at par with mothers step 3 IMO if not only a little less. If you are after looks then i would say 845 first then Step 3, the reason being that this would bring Step 3's shine to the outermost layer and Step 3 does have a lot more deepening effect especially with darker cars as compared to 845, the trade off would be that the shine would not last as long since Step 3 IMO is not a durable wax, If you are after longevity and protection then i would suggest Step 3 first then followed by 845, your paint would look nice after you apply Step 3 but 845 does have a reputation of loosing its luster and shine after a few washes but the protection would still be in great condition even at this point. honestly i have never been really happy every time i try to layer 2 different waxes since the effects are not that compounded, you get more results with sealants and waxes, what you could do is apply 845 first for some long term protection and then just re-apply Step 3 for adding gloss from time to time, this way when Step 3 is gone you still have 845 as back up.
Oh yeah, someone from BB told me that 845 acts like a sealant because of its durability, so i guess in this manner 845 should be the first one to be applied if we are to consider it more as a sealant.
Last edited by madkatz; February 22nd, 2010 at 11:57 PM.