If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Which fluid is leaking??
I just saw an older BMW in the parking garage had leaked quite a large
volume of amber/brownish fluid (a quart or so). Quite a mess. The question is this - what could this be? Engine oil? Power steering fluid? Transmission oil? Reason I'm asking is that I assume oil leaks are fairly rare these days, but if it's power steering fluid shouldn't it be red?? |
Ads |
#2
|
|||
|
|||
> Reason I'm asking is that I assume oil leaks are fairly rare these
> days, but if it's power steering fluid shouldn't it be red?? Not if it's really old or slightly burnt. Transmission fluid would be the same. -- Who needs a life when you've got Unix? :-) Email: , John G.Burns B.Eng, Bonny Scotland Web : http://www.unixnerd.demon.co.uk - The Ultimate BMW Homepage! Need Sun or HP Unix kit? http://www.unixnerd.demon.co.uk/unix.html |
#3
|
|||
|
|||
"Class 1" > wrote in message oups.com... >I just saw an older BMW in the parking garage had leaked quite a large > volume of amber/brownish fluid (a quart or so). Quite a mess. > > The question is this - what could this be? Engine oil? Power steering > fluid? Transmission oil? > > Reason I'm asking is that I assume oil leaks are fairly rare these > days, but if it's power steering fluid shouldn't it be red?? > Could be water from the cooling system. Colours Oil - translucent amber (typical new) to black (old) - artificial oils may be coloured. Water - clear, can be coloured with anti-freeze (blue / green ...) and gets brown with rust after a while. Transmission & PSU fluid - pink getting grey as it ages. Brakes - thin translucent and yellowy. |
#4
|
|||
|
|||
Well it sure >looks< like dirty engine oil (dark amber with some black
streaks around the edges of the puddles), but I'm at a loss as to how the car could dump such a quantity in a matter of hours. Being in the city, it's unlikely the guy ripped open his sump on anything (but never say never). That's why I assume it could be a leak in the steering reservoir - this seems like a BMW weak spot. If it IS engine oil (still not sure), what sort of event could cause a BM to start shedding large amounts of it in that manner? |
#5
|
|||
|
|||
Class 1 wrote:
> I just saw an older BMW in the parking garage had leaked quite a large > volume of amber/brownish fluid (a quart or so). Quite a mess. > > The question is this - what could this be? Engine oil? Power steering > fluid? Transmission oil? Probably engine oil. Oil leaks on old bimmers are not all that rare. The valve cover gasket design (especially on the V8's) is wont to harden (it's made of rubber) and allow seepage to occur which pools in certain places so it can dribble out later on the driveway. Don't ask me how I know this... ;-) > > Reason I'm asking is that I assume oil leaks are fairly rare these > days, but if it's power steering fluid shouldn't it be red?? > Most older bimmers used a variety of Pentosin hydraulic fluid for power steering fluid which is clear or greenish color. Transmission fluid is either clear or red on the way in, but who knows what color after 100k miles... -Fred W |
#6
|
|||
|
|||
"Class 1" > wrote in message oups.com... > Well it sure >looks< like dirty engine oil (dark amber with some black > streaks around the edges of the puddles), but I'm at a loss as to how > the car could dump such a quantity in a matter of hours. Being in the > city, it's unlikely the guy ripped open his sump on anything (but never > say never). This amount of fluid should cause a noticable level fall in whatever is leaking. Another thing that might leak is washer fluid, if the non return valves fail the fluid can just run out via the headlight washers. Normally clear or blue (if you put in deicer) though. > > That's why I assume it could be a leak in the steering reservoir - this > seems like a BMW weak spot. > > If it IS engine oil (still not sure), what sort of event could cause a > BM to start shedding large amounts of it in that manner? > I once dropped my 735i off at a park and fly outfit at Heathrow airport. On my return, they sent a bloke to get it. He must have thrashed it from stone cold, because I noticed a track of oil ending underneath it when they brought it out. I noticed another track of oil when I reversed to turn around. Looking underneath I noticed oil pouring out of the bottom. I called the AA. They discovered that the seal on the filter had blown out, so they put it back in place, screwed it up tight and put some more oil in. I then drove it gingerly to Altwood in Slough, where I was able to call in a favour (my service guy had been promoted to manager) and get it on a ramp late on a Friday afternoon! No problem and the car went on for may years and miles. More recently I had a small leak on a 740i. This was because the filter top wasn't quite screwed up tight. |
#7
|
|||
|
|||
"Class 1" > wrote in message oups.com... > I just saw an older BMW in the parking garage had leaked quite a large > volume of amber/brownish fluid (a quart or so). Quite a mess. > > The question is this - what could this be? Engine oil? Power steering > fluid? Transmission oil? > > Reason I'm asking is that I assume oil leaks are fairly rare these > days, but if it's power steering fluid shouldn't it be red?? > Not necessarily. Power Steering Fluid and Automatic Transmission Fluid were once the same thing, but that is not always the case these days. But, yes if it is the same thing, it should be red. UNLESS it is very old and poorly maintained, then it will turn brown. |
#8
|
|||
|
|||
The A/C will drop a large puddle of water, and if the garage floor was
dirty, then the oil on the floor will cause it to look ugly ... "Class 1" > wrote in message oups.com... > Well it sure >looks< like dirty engine oil (dark amber with some black > streaks around the edges of the puddles), but I'm at a loss as to how > the car could dump such a quantity in a matter of hours. Being in the > city, it's unlikely the guy ripped open his sump on anything (but never > say never). > > That's why I assume it could be a leak in the steering reservoir - this > seems like a BMW weak spot. > > If it IS engine oil (still not sure), what sort of event could cause a > BM to start shedding large amounts of it in that manner? > |
#9
|
|||
|
|||
Nah, it's definitely not water. For one thing, none of it has
evaporated in the last 48 hrs - still a huge puddle. Had another look - it actualy does have a slight reddish tint to it, but it still looks like engine oil. |
#10
|
|||
|
|||
"Class 1" > wrote in message ups.com... I forgot about AC condensate. > Nah, it's definitely not water. For one thing, none of it has > evaporated in the last 48 hrs - still a huge puddle. > > Had another look - it actualy does have a slight reddish tint to it, > but it still looks like engine oil. > Dip the engine and see a) what the level is (could have been overfilled and be coming out of the labyrinth) and b) what colour it is. If it is not engine oil and it is pink (blot some with white paper) then the quantity suggests that either all the PSU fluid has run out due to a blown hose or similar (power steering will not work and the brakes will be very heavy), however the car will be drivable to repair place OR the auto gearbox has a major leak (it is auto isn't it?). In this case the torque converter will not work, the car should not be driven (or you will quickly burn out bands etc.) and should be towed off for repair. You should also look for where it is coming from. Rear of the engine low down implies gearbox. Front of the engine from a pump with a fan belt or the steering rack implies PSU. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
91 Honda Accord - Leaking Wiper Fluid | David Macaskill | Honda | 0 | February 12th 05 07:02 PM |
Why Doesn't Checking Xmission Fluid Cold Work? | Steve | Technology | 2 | January 24th 05 07:47 PM |
changing brake fluid, also ABS | Abeness | Honda | 12 | November 22nd 04 04:29 AM |