Note: My question isn't about how long once the wax is applied on bike gonna protect the surface. It is about how long the wax product itself won't go bad in the bottle so that I can use it again and again in coming years.
So I just bought a liquid Turtle Wax Original for my bike and I was really surprised to know that it doesn't have mentioned an expiry date.
It has mentioned a date 25/09/20 which is probably manufacturing date. So it's 1 year old already.
The product is a bit expensive for me. Now I'm wondering if I invested in right product or not, in terms of how long I can use it.
For example, it just last 1 more year, it would be waste of majority my money spent because I'm not gonna use that much.
To know more about expiry, I read some articles which have mixed views. Some say they aren't supposed to expire soon. So that's why no date of expiry.
Some say that they work best for first 2 years. You should change it if you are car enthusiast.
Some say it's fine for 3-5 years.
Some say it can work fine and be effective even after 10 years!
So I wanted to know some expert views. No similar question has been asked on this site.
Given all that, how should you know that your wax is not effective/safe any more? And how long can we expect car/bike wax to last?