Can 1L + of Extra motor do any harm??

[Petersubaru]

It was one of those very cold days and so I decided to have the oil changed at the dealer... (first time in 20 yrs)..only to find out from looking at the work sheet that 5L (5.3 US qt) was added instead of 4L (4.2qt) as specified in my Outback manual ...and I guess the newer smaller filter might make matters "look" worse by pushing the oil further up the dip stick... apon re-checking the car when cold, the oil is still up 1/2"+ past the "notch" on the dip stick ...I have heard from other peoples experiences that one person had to replace a piston while another person had all the spark plug electrodes covered in oil and would not start

[OB99W]

Assuming you're not experiencing any problems yet, I'd suggest thay you just remove the excess oil. If you're concerned about liability for a problem related to this (unlikely, but...) that may show up in the future, inform the dealer of what you found first.

[SakoTGrimes]

I overfilled by about 2 quarts in my Loyale and when I removed the plugs they were severly fouled. I'd drain out the excess.

[idosubaru]

it's possible they wrote down the wrong amount. if they added one quart extra i'm fairly certain it would be much further than 1/2" up the dipstick.

[The Dude]

Go ahead and drain the extra oil, but 1/2" over the notch probably is nothing to be overly concerned about. The dipstick on the Subaru is extremely non linear. Just a little overfilling makes a really big differance on the dipstick. The major concern with overfilling the engine oil is that the connecting rods and crankshaft will whip the oil into a foam. An air entrained oily foam is a very poor lubricant. Overfilling the engine oil has nothing to do with fouled spark plugs. The oil found on the ceramic spark plug insulators are due to the "O" ring gaskets under the vlave covers leaking.

[Towel Rail]

If the rings are no longer sealing well, I could see a gross overfill causing excessive oil consumption and thus plug fouling. Just set up a drain pan, unscrew the plug *almost* all the way, and let it strickle out for a few seconds. Screw in the plug a couple turns, check the oil level again, and repeat as necessary.

 

- Scott

[Petersubaru]

I drained the new oil completely out into a very clean pan to be reused ..I had too, because I wanted to put a new washer on the nut...almost 5 liters came out, so it was over filled, but not to a great amount..

[The Dude]

I drained the new oil completely out into a very clean pan to be reused ..I had too, because I wanted to put a new washer on the nut...almost 5 liters came out, so it was over filled, but not to a great amount..

 

If you change your own motor oil I have one word for you, "Fumoto". I would not consider changing my oil without one.

[OB99W]

If you change your own motor oil I have one word for you, "Fumoto". I would not consider changing my oil without one.

If you use a Fumoto valve and off-road, I have two words: "be careful".

From http://www.lubricationspecialist.com/front/showcontent.aspx?fileid=105 :

 

Warning:

For users under extreme conditions:

If you are using the Engine Oil Drain Valve on off-road vehicles such as farm tractors and logging equipment under extreme environment (i.e. corn fields, brush areas), it is recommended that a hose clip as shown below be used for extra safety and security. The hose clip, which can be purchased at any hardware stores, will firmly keep the lever in the locked position at all times.

 

 

Safety:

1. Drive carefully at all times, and if you run over any foreign object on the road pull over and check the valve for any damage or leak.

[Petersubaru]

If you change your own motor oil I have one word for you, "Fumoto". I would not consider changing my oil without one.

I thought about that because I have one on my older car...might even come in handy when having one on the Auto tranny

[Petersubaru]

If you use a Fumoto valve and off-road, I have two words: "be careful".

From http://www.lubricationspecialist.com/front/showcontent.aspx?fileid=105 :

 

Warning:

For users under extreme conditions:

If you are using the Engine Oil Drain Valve on off-road vehicles such as farm tractors and logging equipment under extreme environment (i.e. corn fields, brush areas), it is recommended that a hose clip as shown below be used for extra safety and security. The hose clip, which can be purchased at any hardware stores, will firmly keep the lever in the locked position at all times.

 

 

Safety:

1. Drive carefully at all times, and if you run over any foreign object on the road pull over and check the valve for any damage or leak.

many years ago I lost all my oil when driving on a 2 lane road along the eastern coast..the lever picked up some heavy fishing net..fortunately I caught it in time

[The Dude]

many years ago I lost all my oil when driving on a 2 lane road along the eastern coast..the lever picked up some heavy fishing net..fortunately I caught it in time

 

 

Incredible story. Fortunately, you're the one that got away. Off road driving can be a pretty expensive hobby and should be done in old and rusty Jeeps, not shinny new Subarus.