oil like grease

mukki

my 1.6l diesel 307 was complaining of insufficent oil pressure when it was cold for a few mornings so i dropped it in for a service


the guy in the garage said the engine oil had gone like grease, and he changed it twice.

He had never seen it before and has no idea what could have caused it, anyone here have any ideas

mickdw

Running hot from possibly not having enough oil in it might do that. I would be getting rid of it if it still functions pretty well as it wont have done the engine much good

mukki

mickdw wrote: »

Running hot from possibly not having enough oil in it might do that. I would be getting rid of it if it still functions pretty well as it wont have done the engine much good

thats also what the mechanic said,

the real reason for my post.

peasant

mukki wrote: »

the real reason for my post.

adverts ftw ...307 with knackered engine, going cheap :D:D

mukki

peasant wrote: »

adverts ftw ...307 with knackered engine, going cheap :D:D

think a main dealer trade in would be fairer
1 the next owner would have a 1 year warrenty

2 dealer will probably be bankrupt by christmas anyway.

Check your oil level weekly and the water too while you're at it
Old ways are best.

bonzodog2

mukki wrote: »

think a main dealer trade in would be fairer
1 the next owner would have a 1 year warrenty

2 dealer will probably be bankrupt by christmas anyway.

so the warranty wouldn't do much good if #2 occurred ...

Row

Have you been using good quality oil...?
The 1.6 hdi (dv6) engines need fully synthetic oil and a engine flush
every 3-4 oil changes as the only hold around 3.5 litres of oil.
I use Mobil 1 5w/30 esp fully synthetic as it works better with engines that have Diesel Particulate filters...:)

BadCharlie

Sounds like


What the heck was Black Death?

Black Death first appeared in the early 80's when a horrible sticky black substance was found to be the cause of many engine seizures in Europe. Many engines were affected but Ford and Vauxhall (GM) suffered the most. Faster roads, higher under-hood temperatures, tighter engineering tolerances and overworked engine oils turned out to be contributors to the problem. The oils just couldn't handle it and changed their chemical makeup under pressure into a sort of tar-like glue. This blocked all the oil channels in the engines, starved them of lubrication and caused them to seize. I don't recommend this but you can reproduce the effect with a frying pan, cooking oil and a blowtorch. The cooking oil will heat up far quicker than it's designed to and will turn to a sticky black tar in your pan. Either that or it will set fire to your kitchen, which is why I said "don't do this".
Anyway, burning kitchens aside, Black Death was the catalyst for the production of newer higher quality oils, many of them man-made rather than mineral-based.

---

Black death for the 21st century
sludge

There's a snappy new moniker for Black Death now, and it's called sludge. The cause is the same as Black Death and it seems to be regardless of maintenance or mileage. The chemical compounds in engine oils break down over time due to prolonged exposure to high temperatures and poor maintenance habits. When the oil oxidises, the additives separate from the oil and begin to chemically break down and solidify, leading to the baked-on oil deposits turning gelatinous, and that nasty compound is what is lovingly referred to nowadays as sludge. It's like black yoghurt. What doesn't help is that modern engines, due to packaging, have smaller sumps than in the "good old days" and so hold less oil. This means that the oil that is present in the engine can't hold as much crap (for want of a better word) and can lead to earlier chemical breakdown.
The most common factor in sludge buildup is mineral oils combined with a lack of maintenance by the car owner combined with harsh driving conditions. But this isn't true in all cases. For some reason, a 2005 Consumer Reports article discovered that some engines from Audi, Chrysler, Saab, Toyota, and Volkswagen appear prone to sludge almost no matter how often the oil is changed.

Row

Well said BadCharlie....It makes since...:)

The VAG 1.8T is very prone to it apparently.

Bluefoam

I really don't like the connotation that the OP should get rid of the car asap to offload the problem onto some poor unsuspecting person - If the OP was to sell the car he should be open and honest about the problem...

I recently witnessed the sale of a car that was a heap of ****, broke down every two days - the owner sold it to a guy and claimed it drove perfectly without any issues, he handed over a wad of cash & 5 minutes later was standing on the side of the road scratching his head - needless to say the seller had no intention of answering the phone to him, let alone giving his money back... In my opinion, that is criminal...

Mr.Diagnostic

But its ok because he is going to stick a dealer with it......... :rolleyes:

mickdw

Private sales & auctions are cheaper for a reason - because offloading trouble is fairly common. Buyer beware etc.