gas smell in oil
07-07-2012, 12:19 PM
#11
Senior Member
unfortunately, it is pretty common on forced induction with direct injection. Running lean will melt a piston in a hurry so fuel must be there depending on boost and if the timing is a bit off, your running rich. Unburned gas will coat the cylinders and end up in the oil. I believe it is the reason ford recommends 5w-30 for the Eco so you can handle a bit of dilution without oil film breakdown.
You will hear all sorts of things on how often to change your oil but with a turbo DI motor, I would do it often (every 5k). I would not watch the oil life monitor and believe it.
You will hear all sorts of things on how often to change your oil but with a turbo DI motor, I would do it often (every 5k). I would not watch the oil life monitor and believe it.
07-07-2012, 12:27 PM
#12
Junior Member
Before jumping to conclusions and making it out to be much worse than it is, go do a little research on DI engines. The oil smelling like gas is a VERY common thing in DI applications. They all do it and its a by product of the design and how it all works.
I just checked mine yesterday and noted a smell of gas too. Not overwhelming but its there. I have almost 21k miles on mine and have done my research and know that it is a common thing. I am not worried one bit. No CEL, truck runs great, and no issues to speak of.
Unless it is an overwhelming smell and you can't really smell the oil too, I wouldn't worry about it at all. Again this is what DI engines do!
I just checked mine yesterday and noted a smell of gas too. Not overwhelming but its there. I have almost 21k miles on mine and have done my research and know that it is a common thing. I am not worried one bit. No CEL, truck runs great, and no issues to speak of.
Unless it is an overwhelming smell and you can't really smell the oil too, I wouldn't worry about it at all. Again this is what DI engines do!
Keep a close eye on the oil level, make sure you measure on flat ground after the truck has sat for at least 10 minutes to get an accurate reading. If the oil level continues to rise get the truck to the dealer asap.
My WRX's oil smells like gas too but the oil level stays normal.
07-07-2012, 12:44 PM
#13
Senior Member
unfortunately, it is pretty common on forced induction with direct injection. Running lean will melt a piston in a hurry so fuel must be there depending on boost and if the timing is a bit off, your running rich. Unburned gas will coat the cylinders and end up in the oil. I believe it is the reason ford recommends 5w-30 for the Eco so you can handle a bit of dilution without oil film breakdown.
You will hear all sorts of things on how often to change your oil but with a turbo DI motor, I would do it often (every 5k). I would not watch the oil life monitor and believe it.
You will hear all sorts of things on how often to change your oil but with a turbo DI motor, I would do it often (every 5k). I would not watch the oil life monitor and believe it.
This is all a true story but it is not normal for the oil level to be way above full as the OP said. That is why I brought up the injector scenario. A drop in mpg in conjunction to rising oil like he also stated later on is also an indicator of injector isssues.
Keep a close eye on the oil level, make sure you measure on flat ground after the truck has sat for at least 10 minutes to get an accurate reading. If the oil level continues to rise get the truck to the dealer asap.
My WRX's oil smells like gas too but the oil level stays normal.
Keep a close eye on the oil level, make sure you measure on flat ground after the truck has sat for at least 10 minutes to get an accurate reading. If the oil level continues to rise get the truck to the dealer asap.
My WRX's oil smells like gas too but the oil level stays normal.
07-07-2012, 01:29 PM
#14
Thanks everyone for the responses.Just got back from the dealer and everything was fine. No pending codes, no tsb and no special service messages. They checked the oil and said there is a slight hint of gas in oil and nothing to worry about that it is normal for DI engines and to keep monitoring the oil and if it gets worse to bring it back in.
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clubsfit (07-07-2012)
07-08-2012, 10:37 PM
#16
Ford has timed these engines and using VCT camshaft overlap at start up times inject more fuel, overlap the cams to hold the intake and exhaust valves open for a few microseconds, The Bosch fuel system will inject in micro seconds on command as many times as the puter asks and while boost is building blow a great deal into the Catz to heat em up very fast, cutting tailpipe emmisions. The system is designed for fuel injection into a given cylinder to occur for over 320 degrees of crankshaft rotation for each piston, all controlled in micro bursts by the ECU and Bosch. That is info from Ford and its explanation of direct injection in their motors. The use of these high pressure micro second bursts gives the motor the economy, fuel mizer/100% burn going down the road. Ford's Todd Rumpsa, Fuel Calibration Engineer Supervisor released that information. Try cutting down on start ups as you can. Good to hear you don't have MAX fuel dilution problems in your oil.
Last edited by papa tiger; 07-09-2012 at 08:01 PM.
07-08-2012, 11:50 PM
#17
Direct injection diesels especially common rail it is normal to make quart of oil every 3000 miles. The reason is the high compression and extremely high fuel pressure. I would think this would be somewhat normal on Eco boost as well. Fuel pressure is 2100 psi there will be some minimal blowby past rings.
07-09-2012, 01:10 PM
#19
My only examples/experiences with Diesels making extra motor oil higher levels was with a seal leaking on the front of the injector pump letting diesel flow into the engine crankcase ruining the oil. I was the one repairing the injector pumps/replacing the seals due to diesel in the pan. It got increasingly worse for the owners until he brought them in or had em towed/hauled. The other problems were with coolant leaking in thru the oil heater, different problem, different solution. Muchdamage!
Like Mach says, most offer oil testing, not a bad idea if you worry. Oil testing tells the wear, the additives, if there is any dillution, etc. in the oil at the time of removal. Many oil companies do it free for their customers. Obviously for best results you want to drain it after your engine is broken in and has run its time/mileage on the oil. Some use the hour meter to better judge as they are in heavy traffic all the time and not running miles up very quick. Simply reset it at oil changes. Probably near 30 miles to the hour averages, unless you drive a lot of high speed expressway, than you can approach 40 miles to the hour averages. It is very hard to get to 40 miles per hour averages. You need to fly and never let it idle.
In your case it is probably due to the many cold start ups and short hops. Try to cut down on them. The rest of the time the fuel system ( Bosch ) micromanages the fuel with micro burst injections. Many of them, not just one long spary.
Like Mach says, most offer oil testing, not a bad idea if you worry. Oil testing tells the wear, the additives, if there is any dillution, etc. in the oil at the time of removal. Many oil companies do it free for their customers. Obviously for best results you want to drain it after your engine is broken in and has run its time/mileage on the oil. Some use the hour meter to better judge as they are in heavy traffic all the time and not running miles up very quick. Simply reset it at oil changes. Probably near 30 miles to the hour averages, unless you drive a lot of high speed expressway, than you can approach 40 miles to the hour averages. It is very hard to get to 40 miles per hour averages. You need to fly and never let it idle.
In your case it is probably due to the many cold start ups and short hops. Try to cut down on them. The rest of the time the fuel system ( Bosch ) micromanages the fuel with micro burst injections. Many of them, not just one long spary.
Last edited by papa tiger; 07-09-2012 at 01:25 PM.
07-09-2012, 10:14 PM
#20
Originally Posted by papa tiger
My only examples/experiences with Diesels making extra motor oil higher levels was with a seal leaking on the front of the injector pump letting diesel flow into the engine crankcase ruining the oil. I was the one repairing the injector pumps/replacing the seals due to diesel in the pan. It got increasingly worse for the owners until he brought them in or had em towed/hauled. The other problems were with coolant leaking in thru the oil heater, different problem, different solution. Muchdamage!
Like Mach says, most offer oil testing, not a bad idea if you worry. Oil testing tells the wear, the additives, if there is any dillution, etc. in the oil at the time of removal. Many oil companies do it free for their customers. Obviously for best results you want to drain it after your engine is broken in and has run its time/mileage on the oil. Some use the hour meter to better judge as they are in heavy traffic all the time and not running miles up very quick. Simply reset it at oil changes. Probably near 30 miles to the hour averages, unless you drive a lot of high speed expressway, than you can approach 40 miles to the hour averages. It is very hard to get to 40 miles per hour averages. You need to fly and never let it idle.
In your case it is probably due to the many cold start ups and short hops. Try to cut down on them. The rest of the time the fuel system ( Bosch ) micromanages the fuel with micro burst injections. Many of them, not just one long spary.
Like Mach says, most offer oil testing, not a bad idea if you worry. Oil testing tells the wear, the additives, if there is any dillution, etc. in the oil at the time of removal. Many oil companies do it free for their customers. Obviously for best results you want to drain it after your engine is broken in and has run its time/mileage on the oil. Some use the hour meter to better judge as they are in heavy traffic all the time and not running miles up very quick. Simply reset it at oil changes. Probably near 30 miles to the hour averages, unless you drive a lot of high speed expressway, than you can approach 40 miles to the hour averages. It is very hard to get to 40 miles per hour averages. You need to fly and never let it idle.
In your case it is probably due to the many cold start ups and short hops. Try to cut down on them. The rest of the time the fuel system ( Bosch ) micromanages the fuel with micro burst injections. Many of them, not just one long spary.