I gave my car an oil change last week but soon after became aware of an oil leak. It proved to be coming from the air filter tray. The oil level was OK. Today I took her for a very short drive to warm the oil with a view to changing it again. During the drive the oil pressure was fine and the dipstick confirmed a good level. I jacked the car up and undid the sump nut - horror, NO OIL. I added some to the header and none came out. An hour later there was a pool of oil below the water pump region. I have no idea as to the diagnosis Cheers Wayne
if the car is a dry sump, it's a dry sump no? So the oil sits in the reservoir, not the sump, in anticipation of being pumped through the top of the engine down. Let us know what you learn. I've never removed my oil drain plug on my dry sump.
Don't know anything about the Ferrari dry sump system in particular but very little oil should drain from a sump in a properly functioning dry sumps of the type I am familiar with. If there is a lot of oil in the sump, I would be concerned that the scavenger (sump) pump was excessively worn. As noted, the oil level is checked from the oil reservoir. If the dipstick shows the proper level, that's that. One thing that can occur with dry sump systems, depending on the design and the placement of the reservoir and the pressure pump is "wet sumping," where, if the pump is below the reservoir, oil in the reservoir can, under some conditions, gravity-feed into the pressure pump and then seep out of the pump into the crankcase. Some dry sump systems can empty the entire reservoir into the sump if the engine is not run for a few weeks.
Depends on the setup, on the 355 all of the oil drains to the sump after it's shut down, which is why you have to check the oil with the motor running or within 30secs of shutting down. Not sure of the 308 setup, but it shouldn't be completely empty when the motor is off.
Funny. On my 308 dry sump the reservoir oil level changes not one iota from, cold, running, shut down, hot. Makes no difference whatsoever. Only change is the oil in the reservoir gets hot and slightly frothy. I can check it whenever the heck I want and it never, ever changes. I'd have to break out the calipers to measure any difference. Ciao! Hannibal
You mentioned that you had already performed an oil change. How did you get the oil out of the engine the first time? Obviously not through the sump otherwise you wouldn't have been surprised when you noticed that there wasn't any oil coming out.
Technically impossible. On my 308 GTB dysump level changes approx. 1 ltr., from shut off till the next morning. It's doing this since 18 Years and 60.000 kms without any engine problems. Absolutely normal,since the hot oil can drain through the pressure pump back into the sump. And the reason why Ferrari says, in the manual, that one has to check oil immediately after shut-off. And never, ever while the engine is runnung, like on some different dry-sump engines (porsche 911 ). When doing an oil change after warming the engine I drain approx 1 ltr. from the sump. I always undo the sump drain plug for dirt reasons. Best regards from Germany Martin
My 308 dry sump has been sitting for about a year now and the oil tank is completely empty. I assume that all of the oil has drained back into the sump which doesn't represent an issue.
