<span id="result_box" lang="en" closure_uid_q7l97g="119" cd="null" a="undefined" c="4"><span class="hps" closure_uid_q7l97g="604" cd="null">Hello</span> <span class="hps" closure_uid_q7l97g="605" cd="null">to</span> <span class="hps" closure_uid_q7l97g="606" cd="null">all</span> <span class="hps" closure_uid_q7l97g="607" cd="null">forum members</span><span closure_uid_q7l97g="608" cd="null">.</span> <span class="hps" closure_uid_q7l97g="609" cd="null">I would like</span> <span class="hps" closure_uid_q7l97g="610" cd="null">your help</span> <span class="hps" closure_uid_q7l97g="611" cd="null">in</span> <span class="hps" closure_uid_q7l97g="612" cd="null">the following</span><span closure_uid_q7l97g="613" cd="null">,</span> <span class="hps" closure_uid_q7l97g="614" cd="null">I</span> <span class="hps" closure_uid_q7l97g="615" cd="null">am buying</span> <span class="hps" closure_uid_q7l97g="616" cd="null">this truck</span> <span class="hps" closure_uid_q7l97g="617" cd="null">HPI</span> <span class="hps" closure_uid_q7l97g="618" cd="null">Racing</span> <span class="hps" closure_uid_q7l97g="619" cd="null">Nitro</span> <span class="hps" closure_uid_q7l97g="620" cd="null">Bullet</span> <span class="hps" closure_uid_q7l97g="621" cd="null">MT</span> <span class="hps" closure_uid_q7l97g="622" cd="null">3.0</span> <span class="hps" closure_uid_q7l97g="623" cd="null">and among</span> <span class="hps" closure_uid_q7l97g="624" cd="null">the accessories that</span> <span class="hps" closure_uid_q7l97g="625" cd="null">would like to buy</span> <span class="hps" closure_uid_q7l97g="626" cd="null">to get it</span> <span class="hps" closure_uid_q7l97g="627" cd="null">is</span> <span class="hps" closure_uid_q7l97g="628" cd="null">the spark plug</span> <span class="hps" closure_uid_q7l97g="629" cd="null">replacement</span><span closure_uid_q7l97g="630" cd="null">,</span> <span class="hps" closure_uid_q7l97g="631" cd="null">but they</span> <span class="hps" closure_uid_q7l97g="632" cd="null">listed</span> <span class="hps" closure_uid_q7l97g="633" cd="null">three</span> <span class="hps" closure_uid_q7l97g="634" cd="null">types of</span> <span class="hps" closure_uid_q7l97g="635" cd="null">plugs</span> <span class="hps" closure_uid_q7l97g="636" cd="null">are these</span><span closure_uid_q7l97g="637" cd="null">:</span><br closure_uid_q7l97g="673" cd="null" /><span class="hps" closure_uid_q7l97g="638" cd="null">HPI</span> <span class="hps" closure_uid_q7l97g="639" cd="null">Racing</span> <span class="hps" closure_uid_q7l97g="640" cd="null">R3</span> <span class="hps" closure_uid_q7l97g="641" cd="null">Medium</span> <span class="hps" closure_uid_q7l97g="642" cd="null">Glow</span> <span class="hps" closure_uid_q7l97g="643" cd="null">Plug</span><br closure_uid_q7l97g="674" cd="null" /><span class="hps" closure_uid_q7l97g="644" cd="null">HPI</span> <span class="hps" closure_uid_q7l97g="645" cd="null">Racing</span> <span class="hps" closure_uid_q7l97g="646" cd="null">R4</span> <span class="hps" closure_uid_q7l97g="647" cd="null">Medium</span> <span class="hps" closure_uid_q7l97g="648" cd="null">Cold</span> <span class="hps" closure_uid_q7l97g="649" cd="null">Glow</span> <span class="hps" closure_uid_q7l97g="650" cd="null">Plug</span><br closure_uid_q7l97g="675" cd="null" /><span class="hps" closure_uid_q7l97g="651" cd="null">HPI</span> <span class="hps" closure_uid_q7l97g="652" cd="null">Racing</span> <span class="hps" closure_uid_q7l97g="653" cd="null">Glow</span> <span class="hps" closure_uid_q7l97g="654" cd="null">Plug</span> <span class="hps" closure_uid_q7l97g="655" cd="null">Cold</span> <span class="hps" closure_uid_q7l97g="656" cd="null">R5</span><br closure_uid_q7l97g="676" cd="null" /><span class="hps" closure_uid_q7l97g="657" cd="null">My</span> <span class="hps" closure_uid_q7l97g="658" cd="null">question is this</span><span closure_uid_q7l97g="659" cd="null">,</span> <span class="hps" closure_uid_q7l97g="660" cd="null">that</span> <span class="hps" closure_uid_q7l97g="661" cd="null">enxiste</span> <span class="hps" closure_uid_q7l97g="662" cd="null">difference</span> <span class="hps" closure_uid_q7l97g="663" cd="null">between them?</span><span closure_uid_q7l97g="664" cd="null">,</span> <span class="hps" closure_uid_q7l97g="665" cd="null">Which I</span> <span class="hps" closure_uid_q7l97g="666" cd="null">recommend</span> <span class="hps" closure_uid_q7l97g="667" cd="null">buying</span> <span class="hps" closure_uid_q7l97g="668" cd="null">a spare</span><span closure_uid_q7l97g="669" cd="null">?</span><span closure_uid_q7l97g="670" cd="null">,</span><br closure_uid_q7l97g="677" cd="null" /><br closure_uid_q7l97g="678" cd="null" /><span class="hps" closure_uid_q7l97g="671" cd="null">thank you very much</span></span>

Any brand medium to cold plug will do just fine[8D] I normally just slap in the whatever plug I have at hand, tune the carb, bash and have fun.

I wouldn't use a cold plug in any car engine unless you're running 30%+ nitro. Hot or medium plugs are the ticket. I use hot plugs with 20% nitro; McCoy MC59 or Enya #3 are good ones. OS plugs are a ripoff

I like to have several spare plugs on hand, so if it were me, I'd have 2 or 3 on hand. It sucks being out bashing and have a plug burn out and not have a spare.

Glow plugs are expendables and I have a bag full of them in every different heat range. I second what the above wrote, but I always run 30% or more in my cars and therefore use medium to cold plugs myself. Choose what you need accordinng to the type of fuel you run (high nitro= colder plug, low nitro= varmer plug)

Glow plug temp corresponds to how much methanol is in the fuel. Less methanol =
Colder plug; more methanol hotter plug. The slight exception is when using high nitro and high oil content; in this case a hotter plug is better.

I run HOT plugs up to 25% nitro. 8-25% oil. No issues here in MN.

I even use 4-stroke plugs on problem engines with high nitro without issue. I usually only use a 4C plug to diagnose a problem and swap back to a normal hot plug when it's sorted out.

Iuse Merlin 2001 and 2006 cold plugs in most of the small glow engines we sell with only 15% nitro.