4x4 + Brake + ABS lights + sluggishness...then "clunk" and Trans Safe Mode Program

[Ricky Bobby]

5w-40 high mileage should do you well.

[Porschesolutions]

5w-40 didn't do any good...maybe 10% better?

CCV's: one was split but that didn't help anything anyway.

[bcredliner]

The following thread may help: http://www.xoutpost.com/bmw-sav-foru...006-4-8is.html

[srmmmm]

During the summer months, I actually run the "M" oil in my 3.0 X5. I believe it is 10W-60. Living in Texas as you do, the 100+ degree days result in noticeable consumption of the normal 5W-30, to the tune of about 1 quart every 1000 miles. With the 10W-60, I usually go 2000 miles on a quart and have a lot higher confidence level in engine protection while towing the boat. There's just a little slower engine cranking on a cool start, but no measurable drop in fuel mileage.

2002 X5 3.0 237,000 miles
2004 325i 106,000 miles

[upallnight]

Originally Posted by Porschesolutions

Ok I bought 9 quarts of Castrol 5w-40 last night and noticed that my mechanic "topped me off" where now at 4 days later with my oil temps less than 200d, I'm about 1/8" over the Max part on my dipstick: very good chance I'm over-filled. My 25yr-experienced mechanic had no idea that oil expanded when hot and that the Max level on the dipstick should not be reached except when the vehicle is at it's maximum operating temperature.

This is air-cooled Porsche 911 information as the dry-sump tanks & subsequent oil level should only be checked with the engine idling, at max temperature, on flat ground.

Mark

Nice info but wrong Forum this is the BMW E53 forum.

[bcredliner]

Originally Posted by srmmmm

During the summer months, I actually run the "M" oil in my 3.0 X5. I believe it is 10W-60. Living in Texas as you do, the 100+ degree days result in noticeable consumption of the normal 5W-30, to the tune of about 1 quart every 1000 miles. With the 10W-60, I usually go 2000 miles on a quart and have a lot higher confidence level in engine protection while towing the boat. There's just a little slower engine cranking on a cool start, but no measurable drop in fuel mileage.

2002 X5 3.0 237,000 miles
2004 325i 106,000 miles

My X is a native Texan and always drinks 5-30 and never need a kicker between oil changes. I am always haulin' a#s but don't have a hitch or a boat.

[bcredliner]

Originally Posted by upallnight

Nice info but wrong Forum this is the BMW E53 forum.

what that big bold type is about but OP's original post was about leaving his X5 with his wife.

[Porschesolutions]

Originally Posted by upallnight

Nice info but wrong Forum this is the BMW E53 forum.

Not really: the mechanic had over-filled my car by a quart by "filling" (topping off) oil on a hot day on a cold engine.

[upallnight]

Porsche 911 engines have a dry sump oil system which is why the engine has to be running to determine the oil level, but our engines are not dry sump, so the engine has to be off when checking the level.

[Porschesolutions]

yes on the 911 as I own two air cooled cars, but when checking to top-off your X5's oil on a 102 degree day, do so when the engine's hot, not cold. It will register a difference.