I buy the humco vg from Walmart for fit because it's cheap and convenient. I've mixed 3 or 4 different flavors with it and run about 70% VG to 30% PG ratio. I only get about a day or two out of my coils before they are completely gummed up. That's about 10 to 20 milliliters at 50 Watts on 26/32 Clapton coils on average. Is this normal for my
vaping Style? Am I running the juice too hot? Or is the purity of this vg too low at 99.5% pure and the impurities are causing a clogging issue?
Hi pineappledan,
I have a pretty similar set-up. I have been using the Walmart Humco VG in a 30PG/70VG 9mg/mL unflavored juice through a Geek Vape Griffin built with 3mm dual Clapton coils (26/32)(total build resistance is 4.75 ohms)at 50 to 55 watts for the past two months. I run it with both airflow and juice controls wide open. In that time I have gone through more than 350mL (12 oz.) of the juice and I have dry-burned the coils (and changed the KGD cotton) 3 times. I have NOT replaced the coils at all. So I feel fairly confident it is not the VG.
I do seem to find that once I take an accidental dry hit (from not paying attention to the juice level in my tank), and start the carbon build-up on the coil, it tends to snowball. So I have gotten in the habit of refilling my tank before it is completely empty.
I tend to agree with
@dannyv45 that it is most likely the root beer. I have not been a root beer user so I can't speak with certainty, but when I first started vaping, I was told by a sales person at my local brick and mortar that the "dark" flavors like Coffee, Chocolate, Licorice, and Root Beer were all coil cloggers. So what Danny says makes sense to me.
And, like
@Bonskibon says, the flavor can be worth the added nuisance/maintenance.
I did add 5% water to my juice and ran 1 tank through so far, I noticed it spits a little more
I have experimented with distilled water as well (I was looking for help w/dry-mouth) and had the same results (spitting/popping). I was told this is because water has a much lower boil/steam point that either VG or PG. I didn't need it to aid wicking (the 30/70 wicks just fine w/o dilution), and I didn't receive any other benefit from its addition so I quickly dropped it. I am glad that it works for some; it just didn't work for me.