Menthol and coils

Hi, I recently started on a menthol juice. I use a aspire coil and mvp5. I started it and about every two days my coil gets dark brown and burnt taste. I was going about two on a coil. The juice is bad drip gummy bear. I never used menthol until about two ago so I’m just curious to know if it’s normal to go threw coils faster with it. My coil is aspire 40 to 60 watt. I have the vape set on 43.0 bc it doesn’t shoot hot juice in my mouth.

Original source: