X5 35d - Exhaust fluid

[London Lad]

I have been tracking my MPG for 2 years now.

My 35d has returned a lifetime average of 29.7 MPG. That is a good cross section of roads, speeds and loads. Say about 10% country tracks, 25% town roads, 40% highway and 25% Motorway. Loads varied from one driver to 4 up with luggage and very occasionally pulling a small 6x4 trailer.

I am not light footed but I always keep my tyre pressures adjusted spot on for the load and temperature.

I'm in the UK (Imperial gallons) and I know American gallons are not full gallons but I don't think they are that much smaller.

[Fraser]

Originally Posted by London Lad

I'm in the UK (Imperial gallons) and I know American gallons are not full gallons but I don't think they are that much smaller.

US gallons are a fair bit smaller: 1 gallon [US] = 0.832 gallon [UK]

[London Lad]

Oh.... OK. Thanks Fraser.

That would bring SkipSauls MPG up to about 27.6 which isn't that far different from mine.

[Kief]

Originally Posted by jgf330xi

The First oil service was at 7714miles.. Took here in for a rear rattle, service guy looked and said.. "you are about due an oil service, we do that too"... ("3000" on the start up count down).. and did the oil and Urea... now 9000 miles later.. the urea is low and 2500 on the start up count down

Goes in tomorrow



From the Service 4 months ago

So yesterday I had my first oil service at 8727 miles-- I thought BMW changed their policy about annual low mileage oil changes (i.e., wait until CBS notes the mileage--I was still at around a 2500 count down & the time--Sept was one year since delivery).

I never had any issues with DEF warnings, but I did remind them to top off both DEF tanks. My invoice looks identical to the invoice noted above. My question relates to the amount of DEf needed now that it is just a top off rather than a flush and fill. Are 2-2.5 gals enough until the next oil service? Also, how do the techs know how much to top off--there isn't a measure or is there? I was pissed when I opened the hood and found DEF residue stains throughout the engine bay and also some on my front bumper and headlight. I wiped it off immediately! I always tell the dealer never to wash my cars, so perhaps I would not have seen it had they washed it. But still, why wouldn't the tech clean up any spilt DEF Isn't it highly corrosive?

[JCL]

It is not highly corrosive, it is relatively safe. It is corrosive to copper and brass.

[Kief]

Originally Posted by JCL

It is not highly corrosive, it is relatively safe. It is corrosive to copper and brass.

Thanks JCL.

Yeah, I just found the following PDF--pg5
http://www.fleetguard.com/pdfs/produ...es/MB10033.pdf