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Old 03-09-2008, 03:42 PM   #1
Inder
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2000 Legacy GT Sedan
Timberline Green

Default Burning oil & Piston Slap

Hello,

My car is a 2000 Legacy GT Sedan, 5MT, EJ252 SOHC NA engine, with under 90,000 KM's, and the only engine mods are Magnecor spark plug wires, NGK Iridium tip spark plugs, Cobb CAI, and a Cat-back exhaust.

I bought the car used October,2005 and the head gaskets were replaced due to leaking.

Last summer I noticed a considerable amount of oil burning, so I tried switching to Amsoil Full Synthetic, nothing changed. I had an oil consumption report done, they agreed it was burning oil but not more then the "allowable" amount by SoA. I also am experience a ticking noise, which was diagnosed by Subaru as Piston Slap, which they say to fully remedy and prevent from happening again would require the swapping of the block, and replacement of the pistons. However once again, Subaru has deamed this normal in the car and says it does not affect performance or life of the vehicle at all. I have a third-party warranty with FCPP (First Canadian Protection Plan) and they told Subaru they won't do anything about this because it is normal wear and tear.

By the end of the summer I noticed the piston slap very loud at times, and after an oil change I drove on the highway for a total of 12 hours on a weekend road trip, when I got back and checked the oil it was almost bone dry. I ALSO notice coolant levels are low a lot as well.

So we have considerable oil burning, coolant levels low, and piston slap, and apparently all these things are normal, or just wear-and-tear, and even though my purchased warranty covers all these things, they apparently won't do anything about it.

Strange? Any information anyone could provide to me to help strengthen my case?

When my car is out of storage I was going to bring my car to Subaru once more, tell them I want it fixed, and I think it would help to have some documention or at least some strong wording to let them relay to the warranty company. They've already told me they'll rip the engine apart and see what exactly is going on, but if the warranty company won't fix it, I'll be responsible for the labor of the engine tear-down...

Thanks for any help guys!
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Old 03-09-2008, 06:24 PM   #2
bluesubie
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Quote:
Originally Posted by Inder View Post
... so I tried switching to Amsoil Full Synthetic, nothing changed...
Which one?

If I were you, first I would run Auto-RX.
If you want to continue with Amsoil, try 10w30 if you're using the 5w30.
Other, and probably better, Amsoil options would be the Euro 5w40, Diesel 5w40 or Diesel 5w30.

Basically look for something with a thicker viscosity at 100C and/or a higher HTHS when you're trying to slow consumption.

Mechanically it doesn't look like you have a lot of options if your third party warranty is refusing to cover piston slap. How are they ruling it as normal wear and tear if Subaru doesn't? If piston slap doesn't go away, it's not normal.

Here are some End Wrench pdf's on the "normal" piston slap.

http://www.endwrench.com/current/sum...oEndFall03.pdf
http://www.endwrench.com/pdf/engine/...iseInfoS01.pdf
http://endwrench.com/images/pdfs/EngineNoiseSum04.pdf

-Dennis

Last edited by bluesubie; 03-09-2008 at 06:34 PM.
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Old 03-09-2008, 09:50 PM   #3
mikeythejew
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I had a nissan that had piston slap and burned a quart of oil or three between 4k oil changes.


They could be just like some health ins providers in the states who make it an uphill battle trying to use them. When I was a tech at a Honda dealer long ago, third party insurers didn't want to pay fairly and expected the dealer to spend all day on the phone wanting us to give up and tell the customer go somewhere else or you can pay from your own pocket.

Thread about my piston slap in post 2, not much info. http://forums.nasioc.com/forums/show...an+piston+slap
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Old 03-09-2008, 09:56 PM   #4
mikeythejew
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I wouldn't sabotage your engine pouring in 1/2 a cup of coolant in the crankcase to ruin the bearings in short order.
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Old 03-09-2008, 10:25 PM   #5
Inder
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Timberline Green

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Thanks so far for the replies.

Yeah I was using the 10w30 Amsoil
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Old 03-09-2008, 11:06 PM   #6
bulwnkl
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If you're losing coolant as well as oil, you're wasting your time trying different oils or cleaners. You've lost another head gasket are ingesting coolant into the engine. Under this circumstance, it is 'normal' to have extreme engine wear followed by failure therefrom. If you're really losing coolant, that's the angle to press with whatever warranty you have.
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Old 03-10-2008, 02:20 AM   #7
Inder
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Quote:
Originally Posted by bulwnkl View Post
If you're losing coolant as well as oil, you're wasting your time trying different oils or cleaners. You've lost another head gasket are ingesting coolant into the engine. Under this circumstance, it is 'normal' to have extreme engine wear followed by failure therefrom. If you're really losing coolant, that's the angle to press with whatever warranty you have.

Sounds about right to me, losing coolant, oil, and piston slap, in a engine with less then 90,000KM is definitely not right. I will push the coolant angle with the oil and piston slap all at once.
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Old 03-10-2008, 10:55 AM   #8
bluesubie
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Oh, I missed that you are losing coolant again. If you still don't get anywhere, a used oil analysis would show if you have another head gasket leak. It shouldn't have to come to that though.

Good luck!
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Old 03-10-2008, 08:40 PM   #9
Inder
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thanks for the help guys
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