Going from Super Unleaded to Unleaded

societys_child

Arklight wrote: »

No slower than the lorries in the left hand lane. And when he sees the signs for layby roses and actually has time to stop for them he will be the one laughing while you cry.

Haven't a clue !!!!!! you're on about, lay-bys on motorways?


Why would I be interested lay-by roses (whatever the are) :rotfl:

oldagetraveller

"lay-bys on motorways?"
Every mile on the M6 through Cheshire. No hard shoulder now.
I doubt there will be flower sellers though.

John_G_Jones

Navigator123 wrote: »

Unless you are driving a supercar (Lamborghini, Ferrari, Audi A8, or the suchlike) then you should not be using Super Unleaded as it makes the engine work harder, uses more oil and returns a lower mpg than the 'cheap stuff'.

That all sounds a bit made-up, especially the working the engine harder. What do you mean by that bit? It has better anti-knock properties but that doesn’t generally mean that it behaves any differently at lower compressions / less advance / lower engine speeds.

OP, what does the handbook say? My cars need to have the better p!trole, and they dial back all manner of things if they are run on low octane stuff. If yours is supposed to run on Super I’d stick with it, but the engine management knows how to protect the engine from lower-spec fuel so you shouldn’t be taking any risk by trying it.

John_G_Jones

Mercdriver wrote: »

Hell he could get an S-line A3 with the right pack and get something that looks cool but runs more efficiently fuel wise.

OP did you keep the S3 badge on the car or did you order it badgeless?

The S3 and the RS3 really don’t feel all that much like the S-line A3 to Drive. The whole suspension set up, throttle response, I -gear acceleration and so on is different.

I had a B7 RS 4 à few years ago, and before that the 2.7 litre S4 and they were very different in character to the base models.

jimjames

AdrianC wrote: »

Without pausing to consider if they make the slightest mathematical sense.

Sense would probably be better being taken with the prefix of "non" in the mathematical way.

gord115

I have a Golf R which is the identical engine to the S3.
My filler cap says Super Unleaded 98 with 95 in brackets which means it should really be run on Super.

I can't believe some one would by a £30000 car and the scrimp on petrol...

I should imagine the insurance is also a lot for someone in their 20's,maybe you should be thinking of changing to an A3 1.6tdi if your driving like a granny!

d0nkeyk0ng

I’m certain the S3 has the TFSI engine. I know they reused the name and it’s a different engine from the original TFSI. Either way, it’s fine to use 95-RON. Yes you’ll have less power and probably less mpg as well, but it will not harm the engine.

The TFSI engine does not get cleaned by higher-ron fuel. Its design means the only way to clean it is to open it up and do it manually. I’ve had it done once on my car. It clogged up quickly after another 20k miles. I’ve only ever used 98-RON.

I’ve done motorway miles in my Golf GTI. If I hammer it hard, I will need to stop at least once for a refuel on a 200-mile journey. If I pootle along as 60mph, I’ll have used under half a tank. Fuel is expensive at motorway service stations. By putting my foot down, I’ll have saved maybe 20 minutes. Thankfully I’ll average one such motorway journey a month so it’s not horrendous but if I were to do motorway miles on a daily basis, I’d reconsider my choice of vehicle.

almillar

Either way, it’s fine to use 95-RON

In the same way that a Dacia Sandero is a fine form of transport, why pay all that extra money for the car, without paying 2p per litre on petrol?

Mercdriver

Don't nickle and dime your car. A few pence a litre doesn't make a massive difference in your expenditure and the fact that the engine uses more fuel through lower mpg on 95, even those meagre savings are reduced.

Scrapit

It's only a s3, it won't be that fussy.