How many of you doing longer OCI's (my definition would be 7K or longer) change your oil filter during the OCI ? Another way of asking would be whether modern oil filters (like Purolator, Wix or Champion labs) are capable of holding up for these long OCI's or should they be changed out during the OCI ?
Long OCI - additional oil filter changes
- Thread starter pbm
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I used to do 10k oci in my Hyundai with filter changes at 5k. Always seemed to run smoother after the filter change.
The Wix's (51516) I was using for 7-8k miles on my SHO's held up great - these oiling systems pushed 12gpm at high RPMs, so they were no stranger to pushing oil through the filter.
I wouldn't change the filter during an OCI unless it was 12k+ miles in between, but YMMV.
I wouldn't change the filter during an OCI unless it was 12k+ miles in between, but YMMV.
One good thing about switching to a new filter @ whatever mileage is a 5%-10% boost in the add pack of fresh oil(this is dependent on filter & sump size as well). And the other is of course fresh filter media to clean the oil.
I do 10,000 (1, under warranty but will go to 20,000 miles), majority 15,000 (3) ) to a 25,000 mile OCI's. I change the filter when I change the oil. I'd say do not bother.
[ February 20, 2006, 12:09 PM: Message edited by: ruking77 ]
[ February 20, 2006, 12:09 PM: Message edited by: ruking77 ]
I feel it's a good thing to change your filter halfway through the interval and top it off with fresh oil.
I was hoping to hear from you Ruking as I consider you the long OCI king of this board.
I have yet to get up the courage to go beyond 6K but plan to go to 7.5K (with Mobil 1 0W20 currently in the sump of my wifes 01' Honda Accord.) It will take about 7 or 8 months to accumulate that mileage. I am at about the halfway point right now (actually at 4K and thus my original question). We originally purchased a Honda with the thought of keeping it for over 200K but now that I know that it will most likely (almost definitely) need a costly (nearly $3000) A/T rebuild before that I will probably trade it when the 7 year extended warranty on the A/T ends. I realize that I could probably do 10K OCI's and trade it with approx. 100K with no problem but old habits die hard (3K OCI). Thanks for all the replys.
Patman
Staff member
Part of the reason I like doing extended intervals is so I don't need to do the messy oil filter change!
I've gone 9k on my car and almost 12k on my wife's without changing the filter during the interval. I use K&N oil filters, which seem to be up to the task of long intervals.
I've gone 9k on my car and almost 12k on my wife's without changing the filter during the interval. I use K&N oil filters, which seem to be up to the task of long intervals.
10k oil / 10 filter with M1EP in my car.
..."We originally purchased a Honda with the thought of keeping it for over 200K but now that I know that it will most likely (almost definitely) need a costly (nearly $3000) A/T rebuild before that I will probably trade it when the 7 year extended warranty on the A/T ends. I realize that I could probably do 10K OCI's and trade it with approx. 100K with no problem but old habits die hard (3K OCI)." ...
Yeah this is a hard one. From how I see it you have a few predicaments and opportunities. I think in terms of the extended warranty, you would "WANT" it to break down, so you can get it repaired or replaced again and either keep it to 200k plus or sell it with a brand new rebuilt/new transmission. The opportunites of course come with what you want to do and/or if the old transmission will hold up. So in the case of the likihood of selling, it might be a perfect time to check out a 7.5k or heaven help us, 10k OCI with Mobil One!!
Sincee I lived in upstate NY at one time, I can say you probably face harder conditions than I do now in NoCA.
Yeah this is a hard one. From how I see it you have a few predicaments and opportunities. I think in terms of the extended warranty, you would "WANT" it to break down, so you can get it repaired or replaced again and either keep it to 200k plus or sell it with a brand new rebuilt/new transmission. The opportunites of course come with what you want to do and/or if the old transmission will hold up. So in the case of the likihood of selling, it might be a perfect time to check out a 7.5k or heaven help us, 10k OCI with Mobil One!!
Sincee I lived in upstate NY at one time, I can say you probably face harder conditions than I do now in NoCA.
I did it once, will never bother doing it again. This was about 9 or 10 K into a 15 K mile OCI using Bobzoil. On my car, once it's on the ramps & the pan is in place, you might as well drain the oil too, all the work is already done! Plus, when I changed the filter only, after driving up on the ramps I lost the capacity of the filter(~1/2 qt for a Wix 51085) plus an additional 1/2 qt or so from the DOHC valve train. I didn't think oil was ever going to stop coming out!
So, since then, I change the oil filter only when changing the oil. If I should ever run a 15 K OCI again, I'll use the same filter for the entire interval.
So, since then, I change the oil filter only when changing the oil. If I should ever run a 15 K OCI again, I'll use the same filter for the entire interval.
There is also another anomoly and that is the filter is really in second priority to the "FLOW" capability, capacity of the system. This is the primary reason for the "by pass valving" built into the filter. Along with that, the filtering can not be so "FINE" as to either impede or restrict the flow in anyway. Of course there are working specifications for this, but at our level, suffice to say, even if it were common knowledge, it would pass right over or under most of our heads, even on this august board.
The proof in the pudding in this, is even on this "enthusiasts'" board, how many folks actually have bypass oil filtering and pre oil systems!!?? By almost any measure this meets the definition of "fine" filtering.
The proof in the pudding in this, is even on this "enthusiasts'" board, how many folks actually have bypass oil filtering and pre oil systems!!?? By almost any measure this meets the definition of "fine" filtering.
When I ran longer OCI's of 8 to 10K miles I changed filters in between. Now I run 5-6 OCI's and change at that time. I think its a subjective thing just as changing oil at 5K miles. I do what I am most comfortable with. I feel mentally better with a filter in there around every 5K miles.
I've run 8,000 to 10,000 mile OCI's with the Motorcraft FL820S and the UOA were real good with the insolubles at 50% of the average of a 3,000 to 5,000 mile OCI. Of course I was using Schaeffers 5w30 Supreme Blend and FP and LC
. But a qualilty oil filter should last to 10,000 miles under "resonable" driving conditions. Honda thinks their oil filter will last for 10,000 mile OCI's and they are made by Fram
.
Whimsey
Whimsey
i change the filter right around 20K miles, or every 2 years.
On both my 03 Ford Ranger pickup and my wife's 03 Subaru Forester we're on the second 10,000 mi. OCI, with Mobil 1 in the Ranger and Mobil 1 EP in the Forester. During the first 10,000 mile run on each, which ended last fall, I had Mobil 1 in each. For both OCI's in each vehicle I'm using a NAPA Gold in the Forester and a Pure One in the Ranger and running them the full 10,000 miles. When I changed the oil in each vehicle last fall I cut open the filter I took off of each vehicle and inspected it. Both filters were in excellent condition.
8-10k OCI's with filter change at oil change the same time with supertech or premium plus. I tried the filter change thing once on the Tacoma I had a messy afair with little or no real benefit. The oil and filters can take it.. Run them out.
I am currently 9K into a 10K OCI. I'm running the same filter I had put on when I had my oil changed.
Mobil specifically reccomends keeping the same filter on for the entire 15K interval they reccomend when using their EP product.
Mobil has deep pockets and is likely quite concerned about lawsuit liability. They are a PERFECT target for civil lawsuits. If Mobil says 15K is safe on the same filter, I must give serious consideration to the possibility that they are telling the truth.
Now if I had 6 miles of dirt/gravel road between my house and work like my one ex-girlfriend had, I would be changing that filter every 5,000 miles or maybe more frequently. Probably the oil too. Same goes for a farm vehicle or anything I take off-roading recreationally.
Mobil specifically reccomends keeping the same filter on for the entire 15K interval they reccomend when using their EP product.
Mobil has deep pockets and is likely quite concerned about lawsuit liability. They are a PERFECT target for civil lawsuits. If Mobil says 15K is safe on the same filter, I must give serious consideration to the possibility that they are telling the truth.
Now if I had 6 miles of dirt/gravel road between my house and work like my one ex-girlfriend had, I would be changing that filter every 5,000 miles or maybe more frequently. Probably the oil too. Same goes for a farm vehicle or anything I take off-roading recreationally.
For what it's worth, Honda now recommends 20,000 mile filter changes on its 4 cylinder engines!! (10,000 mile OCI with filter change every other time)
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