[gpdriver17]

I decided to do some math this morning and realized we can mix 87 octane gas with Boostane to make 93 octane, and per gallon it's less than expensive than 91 at the pump! This is using my local gas prices, so it may not hold true in all areas. I did some spot checking though and it seems to be true for most on the west coast.

Gas
Regular: $3.89
Premium: $4.19
Difference: $0.30

Boostane Professional
Cost per oz: $0.624*
Amount required 87 -> 93: .43oz
Cost for .43oz: $0.268

* To get the price down to this you have to buy a 5 gallon jug. $399.99 on amazon with free shipping. Boostane has a shelf life of 12 months once opened, so you have to use 1.42 tanks of gas per week for this to make sense. If you use 1 tank per week and want to use the entire 5 gallons in 12 months, you're looking at adding .615oz of Boostane per gallon at a cost of $0.38 per gallon to go from 87 -> ~93.5. This is $0.08 more per gallon than 91 octane.

[BMWDriverX]

One thing you're leaving out is the effects of using boostane. You're going to need new plugs all the time as boostane leaves some kind of orange residue on them, then O2 sensors, etc. You'll also see that orange residue on your exhaust. It's good for bumping up your octane once in a while but I wouldn't use the stuff on a daily basis.

[gpdriver17]

Originally Posted by BMWDriverX

One thing you're leaving out is the effects of using boostane. You're going to need new plugs all the time as boostane leaves some kind of orange residue on them, then O2 sensors, etc. You'll also see that orange residue on your exhaust. It's good for bumping up your octane once in a while but I wouldn't use the stuff on a daily basis.

Do you have any proof for that claim? Tons of people say, "It turns your pugs orange and they have to be replaced." Just as many others run it without changing their plugs all the time and don't have issues. Is the orange any worse than the black they normally get covered with?

Even if this is true, for those of us that are running higher than factory boost, spark plugs and o2 sensors are cheaper than an engine rebuild. Which is what happened to the guy on here that blew his engine. It was tuned for 93 octane and he ran 91. Pre ignition is the #1 cause of bent rods.

[Nikolov]

You also may clog your cats.

[gpdriver17]

Originally Posted by Nikolov

You also may clog your cats.

We'll find out. I'll let you guys know in a few years!

[BMWDriverX]

Originally Posted by gpdriver17

We'll find out. I'll let you guys know in a few years!

You'll notice the effects within a few months if you run that stuff daily, spark plugs and O2 sensors will go then if anything happens to your engine down the road and BMW opens it up to find it glowing orange, you'll probably be paying for the rebuild. Best thing to do is pay to play, run clean 100oct or VP MS109 mixed with 91-93oct, or get a meth kit and you won't need race gas.

[vink]

Originally Posted by gpdriver17

We'll find out. I'll let you guys know in a few years!

I like the fact that you're ready to take the fall if there's any We'll all learn something, one way or other..

I just put 91, 93 or 94 whichever is available and enjoy the car!

[Sophisticated Redneck]

Originally Posted by Nikolov

You also may clog your cats.

I've run boostane professional mixed at .4oz/gallon on my N63 powered X5 for 50,000 miles. I did this to unleash the massive potential of the incredible 11psi this engine runs at because more octanes=moar horsepowerz!!!(JUST KIDDING).

I really ran It to combat the horrific pinging caused by the oil burning due to blocked turbo oil return lines (I didn't know at the time that was causing it and fixed it as soon as I did) and bad valve stem seals the N63 is notorious for. you could hear the pinging under heavy acceleration, especially during the summer months here in AZ and would give an engine malfunction without the boostane or race gas being run (I tried both, 8 dollars a gallon is too rich for my blood). I have since stopped being lazy and took down the engine to take care of the valve stems and decarbonize.

After 50k miles of boostane, I had no problems with the 02 sensors. And the only codes I ever threw were for bad coils, to be expected on any engine over 100k. Plugs were changed about every 15k as I was playing around with heat ranges, build up on plugs was carbon with fine coating of the MMT (the orange crap). IMHO the MMT buildup didn't add any significant amount to the buildup to the plugs, valves, turbos, or pistons, and being a proper redneck, I have much experience with oil burning engines

Everything was coated in the orange MMT but only a very superficial dusting of it. EXCEPT for the cats.... I did noticed the cells of the cats were starting to clog with some being closed off completely. Due to how much oil this car was burning, I believe this was accelerated by the carbon buildup however it is worth noting that there may be truth behind it clogging cats.

With this in mind, I would only reccomend abusing boostane and other octane boosters If you have downpipes or plan to eventually but your cats. Occasional use would not have much effect on them

[Nikolov]

I think limeypride was using and octane booster that was supposedly cat friendly. Not sure of the brand, I think it was klotz or something like that.

I guess he can share some experience with it.

[gpdriver17]

Originally Posted by vink

I like the fact that you're ready to take the fall if there's any We'll all learn something, one way or other..

I just put 91, 93 or 94 whichever is available and enjoy the car!

Well guys, I was wrong. You were right. Boostane ruined my spark plugs resulting in a $550 dollar repair bill. In short, I do a lot of 1/4 mile and 60-130 runs. After a bottle of Boostane Professional all of the times were up .5 seconds in the same conditions. Had the spark plugs changed, they looked awful, first run after that I was able to hit my previous times, .5 seconds faster.

[vink]

Originally Posted by gpdriver17

Well guys, I was wrong. You were right. Boostane ruined my spark plugs resulting in a $550 dollar repair bill. In short, I do a lot of 1/4 mile and 60-130 runs. After a bottle of Boostane Professional all of the times were up .5 seconds in the same conditions. Had the spark plugs changed, they looked awful, first run after that I was able to hit my previous times, .5 seconds faster.

Sorry to hear that! I think you knew it was coming but maybe not this early. It's just the spark plugs?

[gpdriver17]

Originally Posted by vink

Sorry to hear that! I think you knew it was coming but maybe not this early. It's just the spark plugs?

That's what it seems like. Could be more I guess. I'm running meth injection now, hoping that will steam clean anything else over time. Although it didn't do much to clean the plugs.

[MNoob]

Is it possible to determine how much the boostane residue contributed and how much the (too large) gap contributed?

[BMWDriverX]

You live and learn, $500 is not the end of the world for F90 owners. I wouldn’t have thought that one can would do this but maybe because it was the pro version of boostane? Either way no small can shortcuts anymore, e85 mix, 100oct, or MS109 is the right way to increase octane. There’s a 116 unleaded as well but that stuff is expensive AF for 5 gallons!

[FSociety]

I remember seeing this guy on YouTube.. Demonology and he would always use Boostane when he was going to the drag-strip but not for daily driving.
After using 5-6gals of 93 with Boostane for drag-strip purpose he had jugs already pre-mixed he would run a bottle of Techron and return to his pump gas map