Disappearing Oil

August 13, 2003

Hi!

I've recently gone for holiday and the distance run out of hand. In short, I have gone for roughly 16000km without maintenance i.e. oil change. About 2000km from home the oil control lit up for a moment on cold engine in the morning and at the same time I could hear clanking sound from under the hood at certain revs. I stopped at the next gas station and checked the oil level - it was so low that the bayonet did not even get wet. I filled her up with 2 liters which was enough to get it roughly to max.

I've also taken the time to look into the engine and under the car where I have NOT seen any leaks.

My question is: Is it conceivable that the engine has burnt this oil by internal leaks in a manner that is acceptable? (it was 2 litres in 16000km)

To make matters worse this engine has a very conservative nitrous system, by conservative I mean roughly 50hp. I understand that this could have had an impact but since the installation I have used up only 1 bottle of 10l (i.e. 7kg) and never used it below 3000revs.

I'd love some feedback.

P.S. If I've damaged the engine enough it will be time to think of a conversion to 4agze or 3sgte, but that's in the future.

August 16, 2003

Hi pal!

A comment about the oil that U may already know. After the been using the same oil for lets say 7500 km to 9000 km, depending the use, the oil starts to degrade itself. it becames thinner and the properties get lost. That makes the oil to pass easily inside the piston and get burnt with the combustion. Thats is worse is you have NOS, cause NOS affect the rings as far as I know.

So be carefull with that, m8...

But why didn't you take care of your car during your holiday? His gonna take you back home! :thumbsup:

Hope this helps

Cheers

Coyote from BA

Argentina

August 16, 2003

coyote is correct NOS does put extra straain on pistons and rings so it is posssible that you are burning a bit.

also was it mainly high speed miles while on holiday as this can also cause high consumption.

if you are un sure have a compression test done and see what the cylinder pressures are and dont use NOS until your sure the engine is ok :thumbsup:

August 16, 2003

After the incident I've been checking the oil in panic almost evety time I stopped. The masurements gave me a 4mm loss over a 1300km distance. According to the manual 4mm translates roughly to 175ml. i.e 135ml/1000km (let's make it 150) and so I'd like to know if that's normal or not really.

Thanks for the info about thinning I'm not that technical so I wasn't aware, in that case then if I've not damaged anything I'm gonna be exchanging the oil every 5000km.

Another question though.

The manual states that suitable oil is 10W40. I'm running now 5W40 because I frequently travel to countries which have -35 centigrade in the winter and I was experiencing problems starting up. As I understand 5W40 is also thinner by default (or am I wrong) could that also add up to my problem?

Basically I'd like to still be able to use Nitrous and have an engine. So is there any oil you'd suggest that would make it as easy on the engine as possible?

Greetz