Oil consumption issues 812SF

https://www.ferrarichat.com/forum/threads/812-oil-consumption.628081/

There is a bit of information in the topic above, I think the highest I have read is 1 liter per 300 miles.
I keep the level at or slightly below the minimum mark, I can't say much about my 812SF usage yet as I have not put any miles on it since the purchase.

 

~40% of engine friction is generated by piston rings. Friction produces heat and reduces hp. Building engines "loose" w/lower ring tension reduces heat and increases hp - at the expense of increased oil consumption! i.e. "cheap" hp.

F12/F12tdf don't consume oil. It's arguable Ferrari got it wrong w/812SF engine. i.e. had they built it w/enough ring tension to prevent oil over-consumption, how much hotter would it have run, how much hp would've been sacrificed?

 

Absolutely not normal, more than 1L per 1000km, most of oil consumption is after 5000RPM, but mine Gtc4lusso has not any consumption. And V8 porsche 4.8 Litres have cons around 1Liter per 5000km. So go to check engine cylinders condition with endoscopy immediately

 

V12 ROLLSE ROYCE - ABSOLUTELY nothing.
V8 G63 - 0.1 liter per 2000km
992 GT3 - almost nothing
Petrol V8 4.8 - 0 liters per 15000km
575m - 0.5 liter per 3000km

 

My last 812SF, after 23k miles, used (on average) 1 litre every 550 miles .... my current 812SF about the same.

Handbook suggests max 1 litre per 310 miles, suggest talk to Ferrari workshop.

 

very good analysis !

 

Thanks! Years ago built some of my own engines, used wrong rings, engines very oil-thirsty. Learned the hard way.

 

I have been looking inside the inlet manifold to check if there was an excessive amount of oil being sucked in from the crankcase, but this does not seem to be the case, so I think it must be either leaking past the valve seals or the piston ring package.

As mentioned above I think the last is the issue here, not sure if it is really an issue as the dealer I bough the car from is driving an 812SF himself with 170000km (105000 Miles) on it and he did mention to check the oil level every 1000km as they are known to be using a lot of oil.

 

By the way how many smiles has your car now ?

 

Could it be that the car has a factory-installed catch can that we don't know about?

 

At this rate, you guys will need new catalytic converters. This is such an enormous amount of oil that an engine burns. The problem is, oil passing around the pistons into combustion chamber also means gas is entering into the oil pan therefore mixing with oil, diluting it. I know this is a ferrari forum and probably not a lot of you change your own oil, but if you did and get an oil sample, I’d be curious to see the analysis from blackstone. My money is on the oil has excess amount of gas in it. When this happens, oil viscosity will drop and oil wont be able to do its job. Thinned oil due to gas will escape even more from the piston rings increasing the already bad oil consumption. Its a pretty bad cycle, once it starts it doesnt end well.

 

https://bobistheoilguy.com/forums/threads/2019-ferrari-812-superfast-1-009mi-on-0w-30-rli-oil-and-3-700mi-on-the-car.365751/

 

Oil might also be passing through valve stems or valve guides not just piston rings. Best way to know is to take off the intake manifold and look at the top of the valves. Not all oil consumption leads to oil being sucked into intake.

 

Ok, then it can't be blamed on "being in the break-in period " I assume, I am very curious to see what the dealer will find/say about it.

I put 250km on my car today, so a total of 300km since the last oil level check, and I could not see any drop in the oil level before and after, I took the measurement at approximately 84-85 degrC.

The car has 28000km's on it now (=17500 miles)

 

Make sure you check both sides of the oil stick after you pull it out. I do not know why but on my car one side is always without any oil on it and the other side is always at the right level. No oil consumption for me. This is with around-town driving as I do not track cars any more.

Ali

 

It definitely can but pretty sure no one here is going to tear down their manifold on an 812.

 

ok well it's good you got a confirmation that this was not right, and that they will fix it. I wouldnt overthink it. Many issues can lead to oil overconsumption, and they are not necessarily related to poor maintenance or track use. **** happens. Getting a new engine is a good thing! That definitely takes the most expensive failure point out of your car, at least for the new warranty period (I assume you would get one on the new engine). Is the replacement covered under warranty?

 

I dont think any of these oil consumption numbers here are good. Engine shouldn't consume 1 liter of oil multiple times every 1,000 miles. Ferrari's 300 mile standard is just to reduce their warranty liability but I wouldn't keep a car long term if my engine was going through 1 liter of oil every 500 miles. That engine will not last long.

 

I would go for the engine swap if I had to make the choice, it is a nice car and I think very little of these 812's see much track action, it is just not the right tool for the job, they might have a trackday in them but most of them just for the weekend cruise.

With so little miles on it, it makes sense just to stick a new engine in it.

I have now put on about 500km on mine since the last oil check and no sign of any drop in the oil level, car is 2018 and around 28300kms.

 

You might find this thread of interest..... lots of posts about 812 oil consumption rates, but very little, if anything, about resultant replacement engines.
For me, the checking and topping up oil process is a small price to pay to maintain the glorious sounding V12 engine.

https://www.ferrarichat.com/forum/threads/812-oil-consumption.628081/

 

I m not sure this is a sustainable model. That much oil going through the engine will foul the cats, sensors, engine itself at some point. I dont think these cars are driven long enough (yet) for this to become a problem.