Dicor?

I crawled on my roof this morning and noticed a couple small cracks around the skylight. I'm going to clean and apply dicor selfleveling sealant. My question is, the tube I have is new and unopened but is 1 1/2 years old and has been stored in the rv which gets 100+ and 10 degrees. Should i use this tube or pick up another?

It's 90+ degrees, any issue with applying at that temp?