Quick drain valves are quite common on small aircraft engines. Also as a matter of note, most air cooled horizontally opposed aircraft engines such as Lycoming and Continental have aluminum oil pans.

Regarding use of the quick drain on your Mercedes, I presume it does not have an engine skid pan? I also presume that the extended drain is protected to some degree from road hazards?

I ask as given that automobile engines tend to be mounted on "rubber" engine mounts plus the engine mount "frame" twists about relative to other parts; also on cars, road to underside of the pan clearance can be minimal and unprotected.

Additionally, with the 3 and 4, there is a skid plate beneath the engine so one would have to be concerned with clearance between the plate and an extended drain.

Small aircraft engines generally have a lot of space underneath, and certainly no skid plate, hence the additional depth that the drain requires is not a real concern.

The link below is to a sampling of the quick drains available for aircraft engines. I note the aircraft drains cost 10 to 15 times more.

https://www.aircraftspruce.ca/menus/..._oildrain.html

 

I've considered using a quick drain valve or an oil extractor, but on the LR3, both seem pointless. It would be awesome not to have to remove all of the armor under the truck in order to do an oil change, but you still have to remove it all to change the filter. Seems like it would be much more beneficial on something like the M62 BMW engine in the '03-'05 range rovers where the filter is mounted up top. Then, you might be able to avoid removing the armor for an oil change.


I guess the one benefit of being able to hook a hose up would be a bit less of a mess... especially on windy days where your oil stream is blown all over the place and doesn't come out in a nice, steady stream.

 

anyone have a manufacturer or a good part number for these quick drain oil plugs? Been meaning to try one.

 

We still talking about oil changes here?

 

You know what they say about streaming into the wind...

 

I posted a link in post #20 for the Fumoto valve for our truck...

 

 

I see, yes. I was just looking at that page. Nice that the 3 has the drain on the forward face rather than the bottom.

The brass to aluminum sump connection worries me though. Any issues with the two metal types?

 

The link below is to the official Temro/LR brass block heater that screws into the block.


DISCO3.CO.UK Photo Gallery - LR3 miscellaneous/Block Heater and Cord for petrol V8 LR3


This link is re the block heater location.

DISCO3.CO.UK Photo Gallery - LR3 miscellaneous/LR3 AJV8 block heater location

 

Can anyone confirm the threads in the oil sump drain are a steel insert and not aluminum? I read earlier today they were a steel insert and would not pose a problem for the brass plugs