Fuel Additives?
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That is a very good question. I am not sure but read these two brief threads and I am curious as well. I will talk with the head mechanic at the Porsche dealership and see what feedback I get, and in the meantime maybe some of our more experienced members can chime in.
https://rennlist.com/forums/997-gt2-gt3-forum/883118-is-techron-safe-for-porsche.html
Fuel additives - 986 Forum - for Porsche Boxster & Cayman Owners
Addendum:
Meh......you decide.
https://rennlist.com/forums/997-gt2-gt3-forum/883118-is-techron-safe-for-porsche.html
Fuel additives - 986 Forum - for Porsche Boxster & Cayman Owners
Addendum:
Meh......you decide.
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Im using shell VPower Racing fuel which is octane level 98 with shell additive... Feels very smooth amd powerful already ...
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That would be great. I used to use the general fuel system cleaner every few thousand miles in my SLK, but it was a V6 and had a lot of miles on it. It"seemed" to run a little smoother and stronger for awhile, but that could be my mind playing tricks on me.
I use one brand of tier one gas for 5,000 miles, and then switch to another and so on. I was told that each brand has different detergents which when mixed a lot can gum up. I don't know if that's true or old school myth, but I also do an "Italian tune-up" fairly often. That's probably why I'm getting 19 mpg
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It is selling Fuel Treatments that keeps me in Porsches.
This ^^. Fuels have already additives.
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Spoke with my SA and he related that the Porsche head mechanic does not recommend any fuel additives for the Porsche and one other recommendation the mechanic made was buy brand name gas, Mobile, Chevron, etc because some Gas stations are selling lower quality gas and the attraction for some is the lower price.........I guess it's just another example of you get what you pay for.
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Darn. I've been clueless. I thought all gas was the same. I guess I was wrong. Need to siphon the tankful of Speedway out of my Porsche!
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I used to work for an oil major for years, in production. I did a spell in the downstream and asked the refining/additives experts which was the better gas. They told me to buy from a major because they had cleaning additives (the 'minors didn't) and forget about it.
The gas in itself it is either in spec or out-of-spec. In the latter case they feed it back through the process and that's that! They don't sell out-of-spec gas to the cheap Ma and Pa operations.
They recommended to stay out of the additive business, unless there was a specific reason (classic cars needing lead additive).
The gas in itself it is either in spec or out-of-spec. In the latter case they feed it back through the process and that's that! They don't sell out-of-spec gas to the cheap Ma and Pa operations.
They recommended to stay out of the additive business, unless there was a specific reason (classic cars needing lead additive).
What you want to use in the Americas is what is rated a Top Tier gas brand. It's a higher standard and the fuel contains additives to help keep the engine clean. Consumer Reports recommended them and said they are worth the price. Here is a list of brands.
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I agree re the properly branded gas. What's amusing about this explanation though is that all refineries pump their gasoline into the same pipeline network (so it's effectively pooled). Quantities are drawn out later by gas companies who then finish it off to their formula. So if they're all pulling from the same gasoline source, what makes (say) Chevron from (say) a QuikStop?... additives.
Still, I think his point is well taken. Buy the gasoline that has been formulated w/ the proper amount of extra stuff and don't bother with shocking the system as it were.
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Our 2016 Audi SLine Q5 with 86K on it is in for service. Here's a shot of the valves. We've always used 91 octane gas, but at times have had to use other than tier one brands. The tech says this buildup can be a problem with this engine, but I was shocked.
Attachments
Direct injection has changed the additive game, and most refiners don't have good solutions (nor will they develop them until they get more pressure from the manufacturers). Gasoline doesn't wash the valves anymore, leading to significant carbon build-up and the resulting problems with swirl / flow and incomplete closure.
In the US Mobil seems to be the best of the bunch currently, but it still doesn't have the problem fully solved. Hence my recommendation for Madditive in DI applications.
In the US Mobil seems to be the best of the bunch currently, but it still doesn't have the problem fully solved. Hence my recommendation for Madditive in DI applications.
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I have used Lucus upper cylinder lubricate with fuel injector cleaner Seems to be highly recommended in the US.
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