What to run in new 2.5 Subaru Boxer?
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I guess I can understand those who wish to use a 5W-20 or 30 in a vehicle that spec's a 0W-XX, but I'm a little unsure why, if the OP really wants to run a 0W-XX oil in a vehicle that specs 5w30, he didn't just buy the vehicle that REQUIRES 0W-XX oils in the 1st place?
If you want a flat-6 in a Forester you need to do an engine swap from a Tribeca. If you want a timing chain instead of a belt in a Legacy you need to do an engine swap. If you want a 175hp 2.5L in one of the new Impreza's you need an engine swap...
Iguess he could just buy one of each and spend who know$ how much to switch the engines around...
But, why?
Cheers!
p.s. Any SN 5w30, conventional, semi- or full synthetic will work just fine in his Legacy.
If you want a flat-6 in a Forester you need to do an engine swap from a Tribeca. If you want a timing chain instead of a belt in a Legacy you need to do an engine swap. If you want a 175hp 2.5L in one of the new Impreza's you need an engine swap...
Iguess he could just buy one of each and spend who know$ how much to switch the engines around...
But, why?
Cheers!
p.s. Any SN 5w30, conventional, semi- or full synthetic will work just fine in his Legacy.
If you move up to a larger oil filter you can run a lower by-pass because the larger oil filter will flow more oil at the same oil pressure before it gets to the higher by-pass pressure spring that's in the stock filter. You won't lose as much oil pressure(to the engine) if the larger filter does go into by-pass mode. I have yet to see any drawback's to a larger filter.
ROD
ROD
After reading a researching for a few hours, I've familiarized myself with the various arguments about filters for the 2.5 NA Boxer.
the blue OEM Honeywell meets bypass pressure specs, ~23 psi, has a Anti-Drainback Valve, and the only problem some have with it is its construction, which is probably more than adequate.
Also popular on here is the PureOne 14460. (Only fits non-turbo motors due to its bigger size.) Less expensive and better constructed when compared to OEM, its bypass meets spec at 20-25 psi. The only drawback of this filter is that it lacks an Anti-Drainback Valve.
the smaller Pureone 14612 does have an Anti-Drainback Valve, but its bypass is only speced at 14-22 psi. (does fit turbo models)
The reason I'm mentioning this is that I found a filter which as far as I can tell hasn't been mentioned on this site yet, and it appears to me would be a worthy candidate to try out on a Naturally Aspirated 2.5 Boxer. (EJ)...
~~ Baldwin B7243 / Hastings LF565
I couldn't fine exact diameter of the bigger Pureone, only gasket diameters. But comparing it to the 14460, it seems it would maybe have a diameter bigger by about .25 inches. (it would stick .125 inches out on one side)
fyi. the baldwins O.D. is 3 1/32 inches
It's 1/2 inch longer than the 14460 as well.
The most notable aspect though is that it's rated at 20 psi bypass, which is much closer to the OEM spec of 23 than you'll get to with any other alternatives (with anti-drainback valves). (For a comparison of how Baldwin rates their oil filters, the filter recommended by Baldwin in the parts lookup for the 2.5 Boxer has a bypass of 14 psi.)
Baldwins seem to have a pretty good reputation here, and they look pretty sturdy to me, especially for the great price.
The only problem I could see is that the filter, which is slightly larger than the oversized PureOne could get uncomfortably close to the exhaust. I have yet to find the micron rating too.
I'm definitely going to get ahold of one and see how it fits up in there when the time comes to change oil.
the blue OEM Honeywell meets bypass pressure specs, ~23 psi, has a Anti-Drainback Valve, and the only problem some have with it is its construction, which is probably more than adequate.
Also popular on here is the PureOne 14460. (Only fits non-turbo motors due to its bigger size.) Less expensive and better constructed when compared to OEM, its bypass meets spec at 20-25 psi. The only drawback of this filter is that it lacks an Anti-Drainback Valve.
the smaller Pureone 14612 does have an Anti-Drainback Valve, but its bypass is only speced at 14-22 psi. (does fit turbo models)
The reason I'm mentioning this is that I found a filter which as far as I can tell hasn't been mentioned on this site yet, and it appears to me would be a worthy candidate to try out on a Naturally Aspirated 2.5 Boxer. (EJ)...
~~ Baldwin B7243 / Hastings LF565
fyi. the baldwins O.D. is 3 1/32 inches
It's 1/2 inch longer than the 14460 as well.
The most notable aspect though is that it's rated at 20 psi bypass, which is much closer to the OEM spec of 23 than you'll get to with any other alternatives (with anti-drainback valves). (For a comparison of how Baldwin rates their oil filters, the filter recommended by Baldwin in the parts lookup for the 2.5 Boxer has a bypass of 14 psi.)
Baldwins seem to have a pretty good reputation here, and they look pretty sturdy to me, especially for the great price.
The only problem I could see is that the filter, which is slightly larger than the oversized PureOne could get uncomfortably close to the exhaust. I have yet to find the micron rating too.
I'm definitely going to get ahold of one and see how it fits up in there when the time comes to change oil.
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Originally Posted By: mount
Also popular on here is the PureOne 14460. (Only fits non-turbo motors due to its bigger size.) Less expensive and better constructed when compared to OEM, its bypass meets spec at 20-25 psi. The only drawback of this filter is that it lacks an Anti-Drainback Valve.
Are you sure the new engines require an ADBV? The 14460 is a Subaru-specific filter not designed for any other application, so if it doesn't come with one, it doesn't need one.
And for what it's worth, I use 5w30 SynPower in my 2001 2.5 RS.
Also popular on here is the PureOne 14460. (Only fits non-turbo motors due to its bigger size.) Less expensive and better constructed when compared to OEM, its bypass meets spec at 20-25 psi. The only drawback of this filter is that it lacks an Anti-Drainback Valve.
Are you sure the new engines require an ADBV? The 14460 is a Subaru-specific filter not designed for any other application, so if it doesn't come with one, it doesn't need one.
And for what it's worth, I use 5w30 SynPower in my 2001 2.5 RS.
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