Royal Purple Max-Boost (Page 1/2)
Brent7088 JUL 22, 05:18 PM
I went to the local auto parts store and picked up a can of that Royal Purple Max-Boost octane booster instead of of the intended fuel injector cleaner. I had planned to run through some injector cleaner using one of those pressurized non-dismantle cleaning systems at the fuel rail at around 30-35 psi. How much damage would I do using the Max Boost?
Patrick JUL 22, 06:10 PM

They're two totally different products. Why don't you just return what you got and get what you originally wanted?
Brent7088 JUL 22, 06:19 PM
Yea I'll probably end up doing that if I suspect it would damage the injectors in any manner. The can does say it cleans deposits from the injectors, but obviously they're referring to pouring it in the tank.
theogre JUL 22, 06:30 PM
Return and get right cleaner.

⚠️ Booster is not cleaner and use like that can cause major damage because isn't diluted w/ 10+ gallons of gas.

Even w/ "right cleaners" be careful. Can do damage to old port injection. Many had coils direct flooded w/ gas to cool "better" and some cleaners and other additives "eat" coil insulation.

If injector flow anything, Might clean better just using "Top Tier" gas for a tank or three. Most or All of these stations listed their have same good cleaners in all grades not just higher octane product from some others.

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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

Brent7088 JUL 22, 08:56 PM
Thanks for the tips Ogre... what I had thought about too is using the about 2oz. of the Boost diluted with about 16oz. of fresh gas -- but not sure if that would do damage as well.

I searched high and low for the cleanser Scotty Kilmer used years ago called Sledgehammet but they must not make it anymore. I don't think Top Tier would be available in my area.

The car only has 48K on the engine but with its age I just had a sneaking suspicion that the injectors need a good cleaning since it idles rough.
sanderson231 JUL 23, 12:19 PM
"Mr. Injector" in Idaho ultrasonically cleans and flow tests injectors for $18 each. Why fool around with a cleaning solution that may or may not work.

https://www.mrinjector.us/
montegut JUL 23, 01:19 PM
Had my injectors cleaned by "Mr. Injector" last year. Great service and quick turnaround.
Rhodesia1977 JUL 25, 09:05 PM
I have been using the Royal Purple additive for 5 years now and no issues so far on my GT.
sanderson231 JUL 26, 03:22 PM

quote
Originally posted by Rhodesia1977:

I have been using the Royal Purple additive for 5 years now and no issues so far on my GT.



Are you using it to boost octane or for its fuel stabilization properties? How much are you adding. This product and others for example the Lucas octane booster product contain a manganese organo-metallic compound known as MMT for short. The EPA actually allows use of MMT at a certain amount in retail gasoline. Testing showed that this amount did not affect emissions for example by fouling the O2 sensor. and/or spark plugs. However, no gasoline producer in the US uses it because of fear of the unknown (asbestos was once thought safe). For the Lucas product, a legal amount of MMT gives about a 1 octane number boost. The Lucas recommended amount (CYA for off-road use only) is 5X the legal amount for on-road. At this level the O2 sensor might be affected. Since you are a long time user, thought I'd ask about your experience with the O2 sensor and spark plugs. I've got a high compression ratio engine project in the planning stages and 93 octane may not be enough.

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formerly known as sanderson
1984 Quad 4
1886 SE 2.8L
1988 4.9L Cadillac
1988 3800 Supercharged

theogre JUL 27, 08:19 AM

quote
Originally posted by Brent7088:
I don't think Top Tier would be available in my area.

The car only has 48K on the engine but with its age I just had a sneaking suspicion that the injectors need a good cleaning since it idles rough.

TT has a list of Stations carrying it... https://toptiergas.com/licensed-brands/
You don't have Exxon, Chevron/Texaco, Mobil, and others on the list?

48K injectors should be ok w/o you cleaning them other then the "better fuel."
Even "cheap" fuel is better then fuel delivered in 80's and 90's because EPA made the fuels to have more cleaners.