What kind of gas do you use in your M5?

[nybimmerfan]

Be advise though that prolong use of additives or boosters containing MMT may introduce problems with catalytic converters, injectors, oxygen sensors, etc. which is why U.S. petroleum refineries only use MMT to a limited degree -- it may be the cheapest way to boost gasoline octane but at what cost? Personally, I would just go buy gasoline whose octane is prescribed by the manual, not more, not less.

[johntomferg]

Originally Posted by nybimmerfan

Personally, I would just go buy gasoline whose octane is prescribed by the manual, not more, not less.

I completely agree with you. But, if all you are wanting it for is the bi-annual track day with the M5 then I think that fits into that strategy.

[Netwon]

I like off brand 87 octane. I like rock'n my head to the knock'n

[Protious]

Originally Posted by nybimmerfan

If I were in your shoes, I'd first note if the M5 engine knocks when using Chervon 91 (which is already considered high octane) and if does not, then I would continue to use it as it is the only one available in my area. If it does knock then I will have to look for gas with an Octane rating of 93 -- my mechanic tells me that the U.S. gas with rating of 93 is the recommended octane for turbo-charged engines.

Chevron 91 is the best of the best in my area for another ~200 miles. Besides that we got Shell V-Power.. But that seemed to actually do more damage then good with my old 535. Not sure how the M5 would react to it, so I've religiously only used Chevron.

[mstmng]

i use Shell V-Power Nitro+ = RON98

i thought UK petrol prices are crazy comparing to my home country, but if u pay 2+ pounds for RON100 and u drive all the time 91-93 thats crazy...

[PappSchlumpf]

Originally Posted by stealth.pilot

I don't use gas. I use high octane petrol - usually Shell VPower 93. I think gas is intended for the kitchen stove or the fireplace.

Or that smelly thing that comes out when you fart!

[Neil McRae]

98+ RON. usually Tesco Ultimate.

Here in the UK the crackpots at the EU are making petrol manufacturers put Biofuel into gas, it makes the M3 and m5 run really badly. Shell is the worst in this so alot of us over here have stopped using Shell Vpower Nitro.

[utahm5]

Excellent Post! I'm switching to Shell!

[utahm5]

Originally Posted by Neil McRae

98+ RON. usually Tesco Ultimate.

Here in the UK the crackpots at the EU are making petrol manufacturers put Biofuel into gas, it makes the M3 and m5 run really badly. Shell is the worst in this so alot of us over here have stopped using Shell Vpower Nitro.

Biofuel sucks! I can tell the difference in the diesel and gas autos I own. Drops power significantly! It's all political crap!

[mstmng]

Originally Posted by Neil McRae

98+ RON. usually Tesco Ultimate.

Here in the UK the crackpots at the EU are making petrol manufacturers put Biofuel into gas, it makes the M3 and m5 run really badly. Shell is the worst in this so alot of us over here have stopped using Shell Vpower Nitro.

which petrol stations u go to around london?

i have been using shell ONLY for past 2 years... i guess it was a mistake now

[Neil McRae]

so it only just happened when shell launched Vpower nitro+

I'm using Tesco 99, there is one near wembley and one near Heathrow.

The other fuel thats ok is sainsburys 97. BP ultimate is ok also but they are usually alot more price wise, I avoid them on principal.

[mstmng]

Originally Posted by Neil McRae

so it only just happened when shell launched Vpower nitro+

I'm using Tesco 99, there is one near wembley and one near Heathrow.

The other fuel thats ok is sainsburys 97. BP ultimate is ok also but they are usually alot more price wise, I avoid them on principal.

will bare in mind, thanks a lot

[Alpine300zhp]

Originally Posted by utahm5

Excellent Post! I'm switching to Shell!

Good. Only thing I use. Both M's run perfect.