that is ot how you test for a cooling fan problem and you should take it to your mechanic so you dont chop off any fingers. Those fans are on a special switch that comes on when the engine reaches a specific temprature. Paul, 38 years ago there was only one fan. Now, a lot of cars actually have two fans.
2) Propane contains an odorant similar to what's put into natural gas. If combustion is not complete, or there are any leaks, then this odorant produces a smell. In addition, in larger tanks typically there is a large tablet of solid odorant sitting in the bottom of the tank.
The main reason that a propane tank will explode is due to fire or extreme heat. Unfortunately, many are injured (about 6,000 people a year) from propane tank explosions. How, you might ask? When propane tanks are exposed to extreme heat, pressure builds, and explosions occur. Or, a tank might be leaking, and any source of ignition can result in an explosion (for example, lighting a cigarette). Propane naturally has no odor, so an odor of ârotten eggsâ is added to it to let people know if they have a leak.