Last post on Jul 23, 2013 at 1:03 PM
You are in the Subaru Legacy & Outback
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Subaru Legacy, Subaru Outback, Wagon
#7381 of 8657 2006 Subaru Legacy 2.5i Limited Spark Plug Replacement
Jan 02, 2008 (3:56 pm)
Subaru maintains that the 2006 Subaru Legacy 2.5i (non-turbo model) needs to have the NGK FR5AP-11 spark plugs changed at the 30K service. However, my Subaru dealer did not replace the plugs as part of the 30K interval service, because thay say these platinum plugs are good for 60K miles. After contacting NGK and Subaru of America, they both contend that the plugs should be replaced at the 30K interval, not 60K. While conventional wisdom suggest that platinum plugs should last longer, its unclear why Subaru guidance suggest such a service interval, and the dealer a longer interval . Someone is off the mark, and they should get on the same page. Any additional info to clear-up this contridiction for replacement of the spark plugs to support warranty and car maintenance would be helpful.
#7382 of 8657 Re: 2006 Subaru Legacy 2.5i Limited Spark Plug Replacement [legacy5]
Jan 02, 2008 (5:07 pm)
The non-turbo cars do not have platinum plugs, they should be replaced at 30k miles. With that said, on my own cars I don't replace them until 60k, cause plugs rarely are the cause of issues, modern plugs are very well made.
#7383 of 8657 Re: 2006 Subaru Legacy 2.5i Limited Spark Plug Replacement [paisan]
Jan 02, 2008 (11:01 pm)
They do not? My '96 Outback 2.5 liter specified NGK platinum plugs....
That said, I replaced the plugs in my '96 three times - once at about 105K (I purchased the car at 83K, so I do not really know if those were the originals), once at 144K, and once again at 192K. Never did they give me any problems. I only replaced them the second two times because I had the engine out of the car anyway and it was just too easy not to go ahead and do it. I replaced the wires at 105K and 192K; both times it was primarily due to physical damage to one or more wires.
#7384 of 8657 Re: 2006 Subaru Legacy 2.5i Limited Spark Plug Replacement [xwesx]
Jan 03, 2008 (8:24 pm)
I was under the impression that platinum plugs were specified for the DOHC engine and regular plugs for the SOHC because it was harder to get to the plugs on the DOHC.
My dealer claimed (incorrectly) that my 2000 Legacy SOHC had platinum plugs and didn't need changing at 30k. I changed them myself at 60k and confirmed that the plugs weren't platinum.
Back in the 80's I had a Golf GTI. The specified plugs were expensive Bosch Silver plugs. I do the first plug change and guess what comes out of the engine...ordinary Champions!!!
#7385 of 8657 Re: 2006 Subaru Legacy 2.5i Limited Spark Plug Replacement [jfl]
Jan 04, 2008 (6:28 am)
I'm not sure if it was a SOHC vs. DOHC thing, as far as easier access.
I think it was a Forester/Impreza vs. Legacy/Outback.
My Forester's engine bay was narrow, making access more difficult. Some myths even said you had to pull the engine, not true at all, but it was tight.
My wife's Legacy was very easy because you have more space to work with. Same engine, wider engine bay. Hers was SOHC, but it was the extra width that made it easier.
#7386 of 8657 Re: 2006 Subaru Legacy 2.5i Limited Spark Plug Replacement [jfl]
Jan 04, 2008 (11:30 am)
I should have looked this up yesterday.
Spark plug specification for the EJ253 (2.5 L, SOHC, non-turbo) is FR5AP-11 (NGK, platinum)
Spark plug specification for the EJ255 (2.5 L, DOHC, turbo) is SILFR6A (NGK, iridium)
Spark plug specification for the EZ30D (3.0 L, DOHC, non-turbo) is ILFR6B (NGK, iridium)
#7387 of 8657 Subaru 2005 OB 2.5i Wheel Alignment and Tire Issues
Jan 04, 2008 (9:15 pm)
Surprised didn't find any posts addressing my problem so writing to see how should this be handled. Currently have 29,000 miles on the car. Have had 2 wheel alignments and 6 new tires, 4 tires and the alignments were covered under the 3 yr. or 36,000 mi. warranty. The warranty will be up soon and this issue is a real deal breaker. The warranty on the tires (80,000 mi.) does not apply when the car is the problem. Subaru dealer have sublet the alignments and supply the constantly changing specs. Any suggestions?
#7388 of 8657 Re: Subaru 2005 OB 2.5i Wheel Alignment and Tire Issues [mostreasures]
by MrShift@Edmunds HOST
Jan 05, 2008 (10:10 am)
Can you describe the type of tire wear or do you have a photo of it?
#7389 of 8657 Re: Subaru 2005 OB 2.5i Wheel Alignment and Tire Issues [Mr_Shiftright]
Jan 05, 2008 (1:33 pm)
Thanks for your quick reply. Cannot supply pics of tires as they were replaced. However, the rear tires had the biggest problem and primarily were worn the most on the outsides.
#7390 of 8657 Re: Subaru 2005 OB 2.5i Wheel Alignment and Tire Issues [mostreasures]
Jan 05, 2008 (4:35 pm)
Seems like the rear had too much positive camber. Unfortunately I don't think there are any adjustments on the rear alignment so there isn't much they can do for you. Just seems odd.