[Pshem87]

Hi Guys,

I have question re. injector cleaners for example STP products. Are there some differences between diesel cleaner and petrol or they are also very simillar to each oter as engine oils, meaning that you can use them in both engines ? I know they are marked diesel/petrol but just wondering about differences.

What could happen if you will use diesel injector cleaer in petrol engine?? It could have bad influence for engine or injectors? I can't find any information about it and I'm wondering what could happen if you somehow mix those products in use.

Thanks for answers!

[Pladi]

I would not use injector cleaners period. I had a bad experience and could have been just a coincidence, However i researched a bit more and bosch specifically also says not to use them. If you go to bosch parts website and pull up the datasheet/brochure read it it says it somewhere in that datasheet. Dont ask me where that data sheet is exactly i suggest you also do some more research.

[mweisdorfer]

Originally Posted by Pshem87

Hi Guys,

I have question re. injector cleaners for example STP products. Are there some differences between diesel cleaner and petrol or they are also very simillar to each oter as engine oils, meaning that you can use them in both engines ? I know they are marked diesel/petrol but just wondering about differences.

What could happen if you will use diesel injector cleaer in petrol engine?? It could have bad influence for engine or injectors? I can't find any information about it and I'm wondering what could happen if you somehow mix those products in use.

Thanks for answers!

BMW dealerships use Techtron 20 gallon formula. With injectors being so temperamental in the BMW's, I use a bottle of Techtron (2x) a year. I have the original injectors in my car from January 2007. There was not a recall on those cars. 152,000 miles and still running strong.

[Paanzerfaust]

Originally Posted by mweisdorfer

BMW dealerships use Techtron 20 gallon formula. With injectors being so temperamental in the BMW's, I use a bottle of Techtron (2x) a year. I have the original injectors in my car from January 2007. There was not a recall on those cars. 152,000 miles and still running strong.

Same boat here, OG injectors in my 07 335 and I've had success using the cleaners multiple times with no ill effects (other than it noticeable running a bit different while the cleaner is in the tank vs my usual e30 blend), I just swap tunes to stock and try to burn through the tank as quick as possible.

I'd suggest going with the Techron blend over STP as independent tests I've read have shown better results, although BMW does sell their own branded one if you're an OEM-only guy but I'm pretty certain it's just techron with a different sticker on it and a higher price.

[Pshem87]

Thanks but maybe you have information about differences between diesel and petrol cleaners? Both are cleaning, both taking carbon, both decrease fuel consumption and restore power. Does it mean that if you add diesel cleaner to petrol engine won't happen anything bad and backwards ?

[TemjinX2]

if you use any tier 1 gas like shell chevron or even costco...the injector cleaners are already in the gas.

i would just save money and do some walnut blasting clean the valves. That will make a bigger difference.

**
edit
just noticed you were in poland. you can do techron from chevron about once a month. if you have a costco there...they sell them for pretty cheap. i think $20 in a box for a few bottles.

[mweisdorfer]

Originally Posted by TemjinX2

if you use any tier 1 gas like shell chevron or even costco...the injector cleaners are already in the gas.

i would just save money and do some walnut blasting clean the valves. That will make a bigger difference.

**
edit
just noticed you were in poland. you can do techron from chevron about once a month. if you have a costco there...they sell them for pretty cheap. i think $20 in a box for a few bottles.

Well, you should run a fuel injector cleaner (2x) a year and have a walnut blast done every 2 years or around 30-36k. I'd also highly recommend an oil catch can, RB PCV valve (if it's an N54) and change out the breather hose, on the back side of the engine near the PCV valve, every 50k.

[TemjinX2]

Originally Posted by mweisdorfer

Well, you should run a fuel injector cleaner (2x) a year and have a walnut blast done every 2 years or around 30-36k. I'd also highly recommend an oil catch can, RB PCV valve (if it's an N54) and change out the breather hose, on the back side of the engine near the PCV valve, every 50k.

yeah i did notice a lot of oil blow by on the n54. I thought about getting a oil catch can but i figured the best upgrade would be just to get a CPO M2 next yr....

[mweisdorfer]

Originally Posted by TemjinX2

yeah i did notice a lot of oil blow by on the n54. I thought about getting a oil catch can but i figured the best upgrade would be just to get a CPO M2 next yr....

It's a sharp car, but it's smaller.

[labrador]

Costco gas, never used a cleaner, but Techron would be what I would choose. About $5 a bottle at Walmart.

[Kage893]

Red Line SI-1 Complete Fuel System Cleaner is my go to bottle as it contains more PEA than other cleaners. I usually run 3 tanks before an oil change (1/2 bottle, 1/4, and 1/4).

[TemjinX2]

Originally Posted by mweisdorfer

It's a sharp car, but it's smaller.

yeah i want a little bit smaller car for the canyons. I'm split between cpo M2 or CPO 718 cayman

[mweisdorfer]

Originally Posted by TemjinX2

yeah i want a little bit smaller car for the canyons. I'm split between cpo M2 or CPO 718 cayman

I'd take the cayman

[Paanzerfaust]

Originally Posted by Pshem87

Thanks but maybe you have information about differences between diesel and petrol cleaners? Both are cleaning, both taking carbon, both decrease fuel consumption and restore power. Does it mean that if you add diesel cleaner to petrol engine won't happen anything bad and backwards ?

For the most part those companies are pretty tight-lipped on exactly what's in the cleaners and in what ratio's, other than saying they contain PEA you're likely not going to get a breakdown of exactly what's in what cleaner.

That said, considering the difference in how gasoline and diesel works I definitely wouldn't go pouring the wrong one in my BMW. Sure some of the weaker cleaners like Lucas (which again, I'd stick with Techron and not bother with Lucas or STP) say they're safe for both gas and diesel, but the way these fuel system treatments clean things is by making the deposit unbond from your fuel system or dissolve, and then properly combust like the rest of your fuel when it hits that part of the engine. I'm not gonna go in depth about the differences between diesel vs gasoline but they're way different in how they combust.

You wouldn't put diesel in your gasoline powered car just to save a few bucks would you? So no reason to do the same with cleaners that go directly into your fuel, you could end up causing more problems than solving. Just spend the $10 for the one you know will work without issue.

Originally Posted by TemjinX2

if you use any tier 1 gas like shell chevron or even costco...the injector cleaners are already in the gas.

i would just save money and do some walnut blasting clean the valves. That will make a bigger difference.

High quality gas stations definitely do have proper, healthy additives for keeping things clean and running properly (especially Costco!) but the ratios are different, and the amount you get in a Techron bottle gallon-for-gallon is significantly more which is both why it cleaners better and why you run it less often than every tank. A walnut blasting is absolutely still recommended but that's cleaning an entirely different part of the fuel system, you still wash your pits when you wash your ass right? lol

[Indyeah]

I also use Techron and haven't had any ill effects. How much it actually helps is another matter entirely. If you've got 10 year old injectors you might consider pulling them out and taking them to someone who can flow them properly and make sure they are back to original specs.