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#6: 12-20-2012, 03:50 PM
 
 HAMMER DOWN
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Title: Duke
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Location: Tioga county ,NY
Car: 05 Legacy GT w/ STi 6MT~07 Solstice GXP
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Quote:
Originally Posted by Kamen View Post

I am looking at several vehicles, one of them a 2008 outback XT with 66K miles on it. The owner hasn't been very diligent with its maintenance and might have lapsed on oil changes a couple of times (possibly, up to 10,000 miles in between oil changes).

Kamen
Extended OCI will not harm any thing. As long they used the right oil & filter to protect for the OCI they used. And keep the oil top-offed.

I have almost 210k on the original VF-40 turbo & motor. Stage 2+ 18.5 psi of boost. My Avg. OCI is 15k. Compression test at 174k, was 145,147 145,150psi.


Oil history from day1:

New. SOA filter & oil 4000 miles
1st. oil & filter change till 30k, Mobil1, 5w-30 every 6000 miles \ Fram oil
filter every 3000 miles.
Amsoil 0w-30 SSO and Amsoil Ea oil filter, Ea15k13 oil filter at 30k-73k .
At 73K, my filtration I use.http://legacygt.com/forums/showthrea...ons-81741.html My oil system now is 7qt. I add 2-4qts over the 15k OCI.
Oil consummation hasn't change sense car was new.
Most off the shelf oil filter, filter down between 20 & 40 microns. Amsoil full-flow oil filter is 15 microns & Amsoil By-Pass oil filter is 2 microns.
This filtration system add 2qts. of oil to you motor. Which help keep the oil cooler.

My GT mileage; over 209k +, will be over 210k by the weekend.

My G\F's 05 WRX use same oil & OCI, but uses 1 single spin-on, Ea15k13 oil filter. The WRX as over 150k. I add 2-4qts over the 15k OCI.
Oil consummation hasn't change sense car was new.
My 07 Pontiac Solstice GXP, 2.0L DI turbo charge motor, Same oil & OCI, but No Ea filter is available. I use a WIX filter. Change oil filter only every 5k. GXP as over 84k. No oil consummation over it's 15k OCI.

In short, check you oil level often & top as needed. Use oil & filter that will protect for the OCI your running. OA's is the only way you know that your oil & filter is up for the challenge. After that IMO no OA's are needed.

But if have any doubts, walk away.
Mike
__________________
Original Motor/VF-40 Turbo/15k OCI, Amsoil 0w-30 SSO & Ea. oil filters. Tuning Alliance Stage 2+, 18.5psi. Member; 200K + club. Currant mileage:250535