Do you have a N52 528i or N20 528i?
Originally Posted by dpwr
my real world test results, just did full tank with 87 recently and I get exact same mileage as with 89 and 91... I also don't notice any difference in power, nothing is knocking, everything runs as smooth as it can be... draw your on conclusions
If you have a N52 528i, I can believe you. The 328 loaners are the dealer always are filled with 87 and they seem to run fine.
The high compression, turbo 2.0T though? Runs like **** on 87
2011 X5 xDrive 35d Red/Black: ZCW, ZPP, ZRC, ZTP, 300, 386, 496, 4AB, 6FL, Combox, LED Coronas. 04/11 Production