Collinite 845, not as long lasting as it's claimed? - Page 5

IROC-Z · 07-10-08, 10:35

I used a clay bar, then polished. Put a layer of NXT2 on and let it cure for 24 hours. Then put a layer of 845 on. Beading is less than average on hood, almost no beading on roof, and is ok on the sides of the car. This is after about 3.5 months.

Alfisti · 07-11-08, 02:28

Maybe affected by the NXT under it. I find 845 is most durable when nothing under it and 845 x 2.

FJF · 07-11-08, 02:31

In our situation, 845 lasts ~4-6 weeks (max, more like 4) on a car kept outside 24/4. FWIW, the car was fully prepped before application. IME, the 476S is much more durable.

aboveclean · 07-11-08, 04:36

I find it very good for a liquid wax.

jimmie jam · 07-11-08, 07:14

Quote:

Originally Posted by jimmie jam

o.k.. i've ben using 845 since 1973 (yes, 1973). i have always received excellent durability from this product. last august when i got my CTS i clayed it, applied meg's #9and then one coat of 845. now, here is the test. this car is my DD and its sits outside to boot (in the shade most of the time) and with few exceptions gets washed once a week and blown dry. in february this year i applied a second coat on the top surfaces only (the finish was still beading when i did this). i'm just NOW thinking about another clay, #9 and 845 because the finish is starting to "sheet" a little. what's not to like about this product?

o.k.. yesterday i finally did my wash, clay, wash, megs #9 (by UDM/orange pad) and then 845 x 2. the car (white diamond CTS) looks great. i applied by hand with a micro covered foam pad very, very thin wiping after each section then went for the second round. we'll see how this application holds up!

66#1 · 07-11-08, 10:00

Quote:

Originally Posted by Alfisti

Maybe affected by the NXT under it. I find 845 is most durable when nothing under it and 845 x 2.

I've just figured that out myself. I had tried 845 over various polishes,but it didn't last nearly as long as it should IMO.

I put a coat on in early March,and it was totally gone by the end of June. I applied a coat of 845 on top of the paint without any kind of polish on it. We had a lot of rain shortly thereafter,and then I had tons of tiny little beads. I added a 2nd coat last weekend so I should be set for quite sometime.

BTW,I've never seen beads that small and tight. I've never seen beads fly off a windshield like they have done with the last two coats of 845.

Alfisti · 07-12-08, 02:00

Quote:

Originally Posted by 66#1

I've just figured that out myself. I had tried 845 over various polishes,but it didn't last nearly as long as it should IMO.

I put a coat on in early March,and it was totally gone by the end of June. I applied a coat of 845 on top of the paint without any kind of polish on it. We had a lot of rain shortly thereafter,and then I had tons of tiny little beads. I added a 2nd coat last weekend so I should be set for quite sometime.

BTW,I've never seen beads that small and tight. I've never seen beads fly off a windshield like they have done with the last two coats of 845.

Glad to hear it: