What petrol do you use?

[mdaw1985]

Hi all,

I've been a diesel driver for the last 13 years but switched to petrol a few days ago. First thing I did when I got it was put tesco 99 Ron in and my 1.4 act 150 seems to be performing nicely on it. I think I have heard it doesn't have the additives others put in which can increase mpg but it is a high octane fuel so will give good performance. I have done nearly 200 miles since getting it and any journey of around 15 miles has so far given me 51-53mpg so I've been impressed coming from my 11 plate exeo 170 tdi.

 

[LouG]

I use 98. There's no point using higher octane than VAG recommend.

 

[Brimfull]

Always use Tesco momentum in my 2.0tfsi. Used 95 Ron once as I had no option and noticed quite quickly that the engine didn't feel as eager.

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[Sword]

I have the same engine but have only used standard unleaded.

Have previously used higher octane fuel in past cars I have owned with more horsepower and saw no gains, all I saw was my price go up when filling up so I have stuck with standard fuel for a few years now.

I wouldn't spent the extra money on it unless the manufacturer recommends it from stock, just my opinion of course.

 

[Cheriton]

I use Shell 95 unleaded then every 5th tank fill up with Shell V Power.

 

[Boroboy]

I've used cheaper supermarket petrol from the 80's on, without any issues, use 95 ron supermarket fuel now. I'd only use so called premium fuel if I had no other choice.
Although 3 years ago I experienced a bad batch of Tesco diesel, probably water ingress, when I owned a diesel car. Changed the fuel filter twice, then all was sweet again, the filter had done it's job.

 

[bgb]

Tesco 99. Usually 5p/litre more a litre so nothing lost really!

 

[ChrisM75]

Ive always used what's cheapest, and I haven't had any issue. The only time ive notice anything was when i used my bosses company car M3, I filled with 95 and noticed it felt quite flat, she didn't tell me it needed Super, thankfully it didn't take long to burn off the tank.

Since Seat recommend 98 for the Cupra ill be using Momentum in it.

 

[SRGTD]

If the manufacturer doesn’t deem higher octane fuel necessary but you choose to use it, then you probably won’t see any noticeable performance gains. What you might benefit from are the cleaning agents / detergents in the additives pack that are added to these higher octane fuels (Shell V Power, BP Ultimate, Tesco Momentum 99 and other similar premium fuels) by the fuel companies that are claimed to help keep the engine clean.

 

[mdaw1985]

I use 98. There's no point using higher octane than VAG recommend.

That's fair enough but my reason for using this was not because it was specifically 99. Just a super unleaded that was cheaper than standard fuel from places like shell and esso. Plus the bonus was it was still 3p per litre less than standard diesel as well.

 

[Owen83]

That's fair enough but my reason for using this was not because it was specifically 99. Just a super unleaded that was cheaper than standard fuel from places like shell and esso. Plus the bonus was it was still 3p per litre less than standard diesel as well.

Use what ever fuel you like, they all come from the big companies anyway. Tesco, Asda, Sainsburys fuel is all refined & blended by the usual big O&G companies, Valero, Shell, Conocophilips etc.... If it is recomended by the manufacturer to use super, then you will get optimal performance, if it is designed for regualr 95 then use that. Octane is an inhibitor which prevents pre detonation (pinking) with higher compression engines. totally pointless putting is in a car designed for 95 RON....

 

[Dannnnn]

Tesco Momentum in my Cupra 290.

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[silles]

Always use Tesco momentum in my 2.0tfsi. Used 95 Ron once as I had no option and noticed quite quickly that the engine didn't feel as eager.

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Only the Cupra has a mapping for 98+ fuel, it actually says in the book that u get less power with 95.
So other than the 2.0 TSI there is no point paying for "better" fuel.

maybe once in the while put the better stuff for the sake of cleaning additives.

having said that I always put Tesco 99 in the Cupra

 

[Brimfull]

I just follow the advice on the petrol cap which state 98 Ron

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[silky16v]

Any engine that runs direct injection benefits from higher grade better quality fuel, less carbon build up is the key thing here, giving the engine a good workout is also important to keep carbon build up down

Direct injection is mega mega sensitive to any dirt (shite supermarket fuel) or fuel cleaners can cause damage to the injectors (octane booster is fine)

Thankfully pre-GPF Cupra's EA888 engines have port injection as well to wash the back of inlet valves so less carbon build up will be noticed, but use of poor quality fuel is a no no! (there is a reason why its says 98ron on the fuel filler cap)


All the rest of the TSI range of engines that are DI only i'd like to see the state of the inlets and carbon build up at 60k+ when run on shite fuel and driven like miss daisy (its will be like the early EA113 & EA888 Gen1, Gen2 engines) failed injectors and carbon build up in the inlets and EGR

But i guess for a lot of owners once they give the cars back at 3-4yrs old they won't care its the 2nd hand market that will be shafted with expensive repair bills

 

[Owen83]

Any engine that runs direct injection benefits from higher grade better quality fuel, less carbon build up is the key thing here, giving the engine a good workout is also important to keep carbon build up down

Direct injection is mega mega sensitive to any dirt (shite supermarket fuel) or fuel cleaners can cause damage to the injectors (octane booster is fine)

Thankfully pre-GPF Cupra's EA888 engines have port injection as well to wash the back of inlet valves so less carbon build up will be noticed, but use of poor quality fuel is a no no! (there is a reason why its says 98ron on the fuel filler cap)


All the rest of the TSI range of engines that are DI only i'd like to see the state of the inlets and carbon build up at 60k+ when run on shite fuel and driven like miss daisy (its will be like the early EA113 & EA888 Gen1, Gen2 engines) failed injectors and carbon build up in the inlets and EGR

But i guess for a lot of owners once they give the cars back at 3-4yrs old they won't care its the 2nd hand market that will be shafted with expensive repair bills

Totall agree with this, but please don't think on the RON grade as a quality grade... Its the Octane content in the fuel, this doesn't make it better or worse. Just because some engine oil is 60W5 rather than 50W5 it isn't better, its for a different application

 

[KXL]

When I had my EcoTsi, I used any 95 RON petrol that wasn't from a supermarket. I used mostly Esso and Shell. And if significantly cheaper, I also use Texaco, BP, and Jet as well. I didn't notice any difference (power, economy, drivability, refinement) whatsoever between these. On some occasions, perhaps couple times a year, I did use Esso 97, Shell Vpower and Momentum 99. Vpower gave me more mpg (according to trip computer), Esso 97 gave me a smoother/quieter engine, and Momentum didn't give me anything more. Anyway in the fuel flap it stated 95RON. My current Volvo V40 states 95-98RON, with (in the handbook) the higher 98RON giving maximum performance and economy, and for especially hot weather... and 95RON should be used for 'normal' driving.

 

[Brimfull]

Any engine that runs direct injection benefits from higher grade better quality fuel, less carbon build up is the key thing here, giving the engine a good workout is also important to keep carbon build up down

Direct injection is mega mega sensitive to any dirt (shite supermarket fuel) or fuel cleaners can cause damage to the injectors (octane booster is fine)

Thankfully pre-GPF Cupra's EA888 engines have port injection as well to wash the back of inlet valves so less carbon build up will be noticed, but use of poor quality fuel is a no no! (there is a reason why its says 98ron on the fuel filler cap)


All the rest of the TSI range of engines that are DI only i'd like to see the state of the inlets and carbon build up at 60k+ when run on shite fuel and driven like miss daisy (its will be like the early EA113 & EA888 Gen1, Gen2 engines) failed injectors and carbon build up in the inlets and EGR

But i guess for a lot of owners once they give the cars back at 3-4yrs old they won't care its the 2nd hand market that will be shafted with expensive repair bills

Exactly this

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[Jazzjames]

Any engine that runs direct injection benefits from higher grade better quality fuel, less carbon build up is the key thing here, giving the engine a good workout is also important to keep carbon build up down

Direct injection is mega mega sensitive to any dirt (shite supermarket fuel) or fuel cleaners can cause damage to the injectors (octane booster is fine)

Thankfully pre-GPF Cupra's EA888 engines have port injection as well to wash the back of inlet valves so less carbon build up will be noticed, but use of poor quality fuel is a no no! (there is a reason why its says 98ron on the fuel filler cap)


All the rest of the TSI range of engines that are DI only i'd like to see the state of the inlets and carbon build up at 60k+ when run on shite fuel and driven like miss daisy (its will be like the early EA113 & EA888 Gen1, Gen2 engines) failed injectors and carbon build up in the inlets and EGR

But i guess for a lot of owners once they give the cars back at 3-4yrs old they won't care its the 2nd hand market that will be shafted with expensive repair bills

Are you sure that the 1.8 tsi (EA888) engine only has direct injection? Just curious.

 

[Jazzjames]

Are you sure that the 1.8 tsi (EA888) engine only has direct injection? Just curious.

To reply to myself: According to the SeatLeonMK3Manuals Workshop Manual for 1.8 L and 2.0 L engines, the 1.8 TSI does indeed have port injection in addition to direct injection. The documents are to be found on the forum.