Mouth To Lung (MTL) vs Direct To Lung (DTL) Vaping
                     Mouth To Lung (MTL) vs 
Direct To Lung (DTL) 
Vaping
Types of Vaping
● There are two fundamental styles of vaping: 
Mouth to Lung (MTL) and Direct to Lung (DTL) Vaping.
● Each of the styles is characterized by a unique set of benefits but 
typically performs best with a particular type of e-juice and device.
● The MTL vaping style resembles the way smokers do their “thing”; 
taking a puff, making it pause in the mouth, and then inhaling it.
● In DTL, the vapor is drawn directly to the lungs before it is exhaled.
Mouth to Lung (MTL) Vaping
How MTL Vaping is Done?
● Explaining the MTL process, in summary, the vaper draws vapor 
smoothly into their mouth – but avoids taking short and sharp drags 
like it is done in smoking – by taking long draws.
● The vapor in the mouth is then inhaled to the lungs at the same 
time drawing in air. Finally, the vapor is exhaled. Indeed, for some 
people, for some reason, it takes very long to understand the 
meaning of an MTL throat hit.
Why MTL?
● For some people, it is a reason for not being interested to spew out 
large vapor clouds; it’s for the aim of getting something similar to 
the feeling they would get when smoking a cigarette.
● In MTL vaping, breath is also included in the process implying there 
will be no substantial production of vapor in the system.
The Best Nicotine Strength for MTL Vaping
● For ex-smokers, they will definitely require a higher content of 
nicotine in their vape juices (between 12 – 20 mg/mL) and MTL is 
the best option.
● If the e-juice is not satisfying your craving, it’s easy, possible rather 
than scale it down or up accordingly.
The Best PG/VG Ratio for MTL Vaping
● A 50VG/50PG ratio offers a good throat hit and is good for vapor 
production.
● A 60VG/40PG ratio offers a smoother vaping experience and a 
better vapor production.
● Several recent MTL vaping devices perform superbly with 
70VG/50PG ratio but it is good to confirm the appropriate ratio for 
the device.
Coil Resistance
● For MTL devices, the resistance of coils ranges between 1.0 to 2.8 
Ohms where the most common devices have coil resistances of 1.5 
and 1.8 Ohms
● Compared with DTL devices, MTL devices come with higher 
resistance coils. Ultimately, these devices are suited for application 
with a low wattage scale.
Direct to Lung (DTL) Vaping
How to Perform DTL Vaping?
● DTL vaping involves: drawing the vapor slowly and steadily directly 
into the lungs (can take 3 to 5 seconds) – without taking sharp 
drags. Once it is drawn into the lungs, vapor clouds are exhaled.
Why DTL?
● At first, your lungs will experience a shock but with time, if you 
begin with low-wattage combined with a tight airflow, then slowly 
open it up, the lungs will adapt and will eventually love it.
Nicotine Strength Suitable for DTL Vaping
● The recommended e-juice nicotine strength for DTL hitters is 6 mg 
and below. Most vapors use this method like a nicotine strength of 3 
mg.
Best PG/VG Ratio for DTL
● A 60VG/40PG ratio will deliver good flavor, a little hit on the throat, 
and some decent cloud production.
● A 70VG/30PG ratio is typically the most popular blend and delivers 
good flavor, a lot of clouds, and a smooth hit on the throat.
● A 80VG/20PG ratio will deliver good flavor, dense clouds, and 
smoother hit on the throat.
● A 90VG/10PG ratio will deliver good flavor, much denser clouds, and 
a smooth hit on the throat.
Airflow
● For DTL vaping, the majority of tanks come with the option to 
modify the airflow.
● When the airflow is open, it implies that more air is drawn through 
the tank and into the lungs without restrictions.
Coil Resistance
● Compared with MTL devices, DTL devices have low coil resistance – 
lower than 1 Ohm – implying they are operated at higher wattage.