Two years ago i bought a dirt cheap, well used Audi 100 1.8E
this is the absolutely cheapest version of the car, with a 4 cylinder 90 Hp K-jetronic engine, no power steering, no electric windows, no nothing.
basically a Golf in a larger piece of metal.
When I bought it it had 295000 km on the meter, and now it has 346000 (i drive a lot...). It has been runnig like clockwork all this time (and according to the previous owner since new), getting good gas mileage, no oil consumption to speak of (for an old car :) and only needed very basic maintenance (brake pads etc).
As I was driving to my folks for Christmas , about 400 km, after halfway it lit the oil pressure light, so I pulled over. when I checked the stick there was oil on it, but it seemed very thin, and it was on the low end of the scale, so I added about a litre, started the car and the light went off.
I wasa little surpirsed because unitl now the car hasn't used much oil, it basically needs a litre every other refuelling (1500 km or so, i usually top it up on payday and the drive a month; I get about 7.5 l/100km mileage), but this time it had used a litre in only 200 km. there is no obvious leakage, and no visible blue exhaust.
i got to my parent's house, celebrated christmas and went home (400 km)
The day after coming home I discovered that the oil light flickers at idle, whenever the engine is warm. The temp seems normal and the radiator fan turns off and on just fine. The oil level is at max. I feel no difference in the engine performance, it's the same smooth sluggish sewingmachine motor as always.
Do you people think I damaged the engine badly when I ran it out of oil?
I stopped the engine ASAP when the light came on, but I was doing 140km at 7/8 part throttle when it happened..
Maybe I just need an oilchange, to my layman eyes the oil on the stick seems very thin, compared to the oil in the bottle. Is it possible that short trips to and from work with repeated cold starts have made the oil mix with unburned petrol and such now that winter has come around, and then the petrol Oozed away when I took a longer trip and things heated up properly?
maybe 346000 km is about the life expectancy of the 1.8E 90 hp engine, and it is going to die anyway?
Maybe the short lack of oil pressure caused just enough wear to drop the idle pressure enough to trigger the sensor, and it was low already due to normal wear?
What do you people think? Any suggestions are welcome. This car has been a great cheapskate for me, I bought it for about 1000 Euro, and have done almost 50000 kms on it wiht only changing front brakepads and rotors, getting new tyres, a fanbelt and a set of sparkplugs.. incredible.
Hmm. i just realised i havent changed oil in 50000 km :-/ I guess I'll go ahead and do that tomorrow.
should i get a thicker oil for my worn engine? Should I even consider semi-synthetic or is anything but dirtcheap wholesale oil a waste?
writing to newgroups really help sometimes :-)
//Cheapskate Audi driver