I use tractor oil too . My engines have run sweet on it for years . I.E. Subaru legacy, and disco 300tdi.

Wondering if its a mileage thing, age, or servicing intervals or just pot luck.

Have a 300tdi year 95 with 130k on clock, and planning a long trip next summer. Is it a good idea to do it around now as I hear a lot blow around 150k, mine runs fine so am I just asking for trouble or should I leave it .

The transparent fuel pipe is very helpful in checking for air sucking in to fuel system, it worked for me and turned out to be the fuel sender lift pipe in tank was rusted and sucking air , especially my start ups from anything over a few hours was difficult,. Now my disco starts up from...

sedimenter blocked or air leak somewhere . also lift pipe on fuel gauge in tank sometimes rots.

You can buy a dye colour from a motor factors, pop it in coolant and it will show up where leak is.

Possibly swivel preload is not correct.

Mine was like a watering can . By the time I got it sorted i found at least 6 different leaks. door seals, bulkhead gutter trays,floor bungs, rear door which rotted rear floor. Advice is to fix leaks before rust eats your disco.Also I now check floor mats yearly ensuring no leaks. talcum powder...

My method is using about two yards of garden hose with a funnel at top. In engine bay strapped with tie wrap to bonnet rod. Just pour in amount and have a beer while waiting and I pre warm m90.

I had to take wings off few times found a few holes and leaks . best fix them leaks or you will have major work in future welding.

Is recirculation working properly ?. are the window duct pipes still connected . When working the system clears mist quickly on my disco and no AC either.

love seeing a discovery getting a new lease of life. Good on you.

bike rack is ok. roof racks are noisy. trailer cumbersome. D2 carries a lot of cargo , lighten load.

Its understandable.

Got vibration and bearing noise at 60mph . When removed front shaft its gone.Fitted new shaft and its there . Can anyone help me diagnose if its front diff , transfer front output bearing or something else ? Are there certain sounds tests etc. The front diff has very little backlash. but...

I was like you got a disco 3 within 6 months went back to a 300tdi, running costs were too high. Did like the comfort however.

check the T piece junction which is plastic and prone to snapping .causes low vacuum .Happened to me ,just a suggestion .

Progress.... I removed front prop and rumble is gone ! The front prop is new, so i suspect either front diff or transfer box output bearing, which has a tiny bit of movement up/down , read on threads this is acceptable ? Any advice welcomed . Thanks.

1 Did you prime new damper ? 2 Swap tyres about front to rear, 3 check tracking and 4 any bent rods.

Thanks James, but how do you check alignment of rear one with the rubber joint