Does the H6 have a timing belt like to H4?  If so, does it have to be changed every 100K miles? 

Depends on which H6 you're talking about.  The SVX eg33 is belt driven, the ez30 and whatever the 3.6 code is have a chain.

I'm talking about the L.L. Bean Outback H6. 

Chain

All EZ30 2001+ Subaru H6 engines are timing chains and no maintenance required.

 

Depends on which H6 you're talking about.  The SVX eg33 is belt driven, the ez30 and whatever the 3.6 code is have a chain.

and the ER27 has two belts!

Had one with 400000kms on original chain did rattle once and a while but no problems

EZ engine was designed with a chain so it would fit lengthwise into existing Legacy platform. No maintenance needed there, but you will be spending almost as much time replacing the spark plugs as you would on a timing belt.

Edited June 7, 201312 yr by avk

Ebut you will be spending almost as much time replacing the spark plugs as you would on a timing belt.

LMAO!!!  indeed!!!

 

one way to mitigate that is do the valve cover gaskets at the same time as the spark plugs.  most subaru's need valve cover gaskets by 200,000 anyway and the spark plugs are much easier with the valve covers removed.  or do them both when you first get a new to you H6.  i did that to one of mine and the other hopefully i'll get to this summer. 

I agree that would be a good way to go, and since this is all about being practical, maybe 60K is too early for those spark plugs. I would much rather go through the whole thing at 100K. 

Just recently helped a buddy buy a 2008 Corolla wagon Pontiac Vibe. The schedule calls for new plugs at 120K . The thing is ridiculously low maintenance compared to any Subaru, on paper anyway, but I digress.

Edited June 7, 201312 yr by avk

I don't even know how long my plugs have been in. 80K?

when i've changed H6 plugs, i've never seen any in bad shape, they've always looked in very good shape, they definitely last whatever they are.