Senior Member
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You're putting on a larger filter. A filter that's drawing in more oil, thus taking it from the engine. However your lubrication system need 6 quarts, so you add more oil. However it can only sustain a certain amount in the engine, before fouling your sparkplugs, or creating heavier leaks. At that point you're adding more, but just enough to keep it safe on the dipstick.
Now you have a larger filter, but it needs to cycle through more oil anyways just to keep it clean. At this point... You just have more oil to clean because it's all getting cycled through your engine, picking up gunk.
I don't know if my explanation is making sense so i'll try to break it down into ratios...
Let's say factory specs =
10/10 Oil/Filtration
Larger filter alone =
5/15 oil/filtration
Because the larger filter is carrying more oil, thus you're loosing what you need for lubrication.
More oil + Larger filter =
10/10
Now things are back in balance, you're just carrying more oil to accommodate a larger filter.
Now you have a larger filter... But it's cycling a greater volume of oil. Thus nothing changes. The only thing more oil is going to get you, is diluted dirt. Not as concentrated as it would be, therefore less mass, therefore more debris that will slip through your cellulose filtration.
I hope this makes sense to someone.
I don't even know where to begin.Originally Posted by KJamesJR
I don't see the appeal of running a larger filter.You're putting on a larger filter. A filter that's drawing in more oil, thus taking it from the engine. However your lubrication system need 6 quarts, so you add more oil. However it can only sustain a certain amount in the engine, before fouling your sparkplugs, or creating heavier leaks. At that point you're adding more, but just enough to keep it safe on the dipstick.
Now you have a larger filter, but it needs to cycle through more oil anyways just to keep it clean. At this point... You just have more oil to clean because it's all getting cycled through your engine, picking up gunk.
I don't know if my explanation is making sense so i'll try to break it down into ratios...
Let's say factory specs =
10/10 Oil/Filtration
Larger filter alone =
5/15 oil/filtration
Because the larger filter is carrying more oil, thus you're loosing what you need for lubrication.
More oil + Larger filter =
10/10
Now things are back in balance, you're just carrying more oil to accommodate a larger filter.
Now you have a larger filter... But it's cycling a greater volume of oil. Thus nothing changes. The only thing more oil is going to get you, is diluted dirt. Not as concentrated as it would be, therefore less mass, therefore more debris that will slip through your cellulose filtration.
I hope this makes sense to someone.
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Well I hadn't known how much more one would get from a larger filter. If it's only offering 16 ounces... Couldn't you just keep the factory filter size, and substitute an additive instead? Also, If you're running your engine at 210 for more than 10 minutes, 6 1/2 quarts are going to come up to the same temperatures regardless. Correct me if I'm wrong. It's not as if it will cool any faster because lets face it... You're running 30 - 40 weight motor oil. It's going to stay hot for a while.Originally Posted by Bustedback
Your logic is kind of skewed. A larger oil filter has more filtering surface area and allows up to another half quart of oil to aid in lubricating and cooling the engine enternals. A half of quart of oil is not going to offer much of a gain, but it's not going to hurt anything either.
Although it has a larger filtration surface, it's pushing more volume. Therefore it's all getting saturated equally... Then there's the dilution theory. The carbon particles, and other varying dirt, is getting thinned out. If the mass isn't there, nothings going to be picked up by the filter.
Of course, my logic could just be completely askew... At that point I have no idea what I'm talking about.
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It's okay. You don't have too... I just got off a 9 hour shift if that explains it.Originally Posted by cranesrule
I don't even know where to begin.
Member
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I hope it makes no sense to everyone.Originally Posted by KJamesJR
I hope this makes sense to someone.
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I guess the only sensible evidence here is that running a larger filter, with a larger surface area, just means you'll have to change your oil a little less frequently.Originally Posted by Jackup
I hope it makes no sense to everyone.
I use bosch or mopar filters only... Came on here and everyone was all about wix so I tried one with my last oil change and will never use them again. For the first time in the 18 years I've owned my 93 I was getting dry starts. After a week of them I changed to a mopar filter and she's happy again 
I just stick with the good old mopar 090. Works on my Xj,Tj and 4.7 Wj. Keeps it simple.