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What is not clear on that chart is differential pressure. You put enough pressure behind it, you can push contamination through the media. Especially if it's a weak media.That could be where the hockey stick part of the curve come from, when the differential pressure starts blowing holes and...

I have read here people talking about "dirty" oil left in the filter. Well, that and the other oil left in the engine is as clean as the oil filter can make it. To the degree it's got contamination, it's the smaller stuff that is minimally harmful and because we are talking about a small volume...

Originally Posted By: rrounds Here is my post on my 90k mile air filter. https://www.bobistheoilguy.com/forums/ub...ilt#Post4224252 With a new filter I got 8" but if I took the lid off of the air filter box I got 0"(air still went through the filter). At the end of 90k miles I still got no...

Originally Posted By: SilverFusion2010 OEMs have this filtration stuff pretty much figured out I think they do. Sometimes I disagree with the direction of their choices when they have to compromise on something, but they have different priorities than geeks like me.

Coupla things. The generic rule of thumb is to change the filter when it reaches 10" of water ABOVE the baseline new filter reading. That is subject to change if engine manufacturer's specific recommendation differs. When you can find a maximum spec for light duty gas engines, which is very...

Originally Posted By: circuitsmith Restriction gauge FTW: https://www.bobistheoilguy.com/forums/ub...42K#Post4600881 Great link! Great test! Great lesson! Hats off to you, sir. I noted in that thread some people trying to "one-size-fits-all" it. Doesn't work. For that car in that...

Originally Posted By: Smokescreen While it is true that there are vast differences in the filtering ability of aftermarket filters, would it be safe to say that buying OEM part is the safe bet ? For myself, I prefer not to bet. I attempt to find out! The old Spicer test (google "Spicer air...

Seems like some of you are promoting name brands as "great" without any specs? I don't care what name is on the box, or how good the marketing people are, gimme the specs! If they aren't listed freely, contact the mfr and ask for their efficiency ratings. Ask: -give them a specific part number...

I don't know much about the new Ultras but I think generally speaking Fram makes top drawer air filters. Don't know much about the Puros either, coming or going. I am a few years from having to replace any filters, so I am not engaged in a search at the moment.

Originally Posted By: WobblyElvis Never said I doubt it and it makes perfect sense. I just to learn from the best sources I can, not hearsay. Thank you for the info. Got it! I haven't been around for a while but I think I had a pretty good rep for not proffering heresay... but you can be the...

Originally Posted By: Pajero Pantyhose worked well when Mt. St. Helen's blew in 1980. I live in the desert (large sandbox) and installed a Snorkel. People make fun of me because they think it's for water. It's because of dust. Ever going wheelin with a bunch of 4x4...the dust is horrid. Cyclonic...

Originally Posted By: WobblyElvis Where might the best information be for this? Such as independent studies or SAE papers etc.? Information that proves dirt entering the via the air intake is a major [perhaps the biggest] contributor to engine wear and secondly, that a used filter [not yet...

I'll tell ya... The air intake system is the only connection between your engine's crankcase and the outside world. It's the only way outside contamination can make it into the engine. It's important to long engine (and lubricant) life that the air intake system be completely sealed and use the...

Originally Posted By: aquariuscsm https://groups.yahoo.com/neo/groups/Wal_Mart_Oil/info Super Tech oil has its own discussion forum Wow! A whole 15 subscribers too! Not putting them, or the oil, down, they just need to gain a little traction.

Some of the store brand oils are very good. Some less so. When I see something I'm interested in, I look for a VOA or do one myself. Compare that to name brands VOAs. Still, I find it very satisfying to buy top shelf at a bottom shelf price. I have been using Pennz Platinum lately in our two...

Originally Posted By: NYSteve Have you looked at the NTZ Transprotector? It is all metal but only $25 and can be plumbed in-line, not the an fittings the metal magnefine has. https://bobistheoilguy.com/forums/ubbthreads.php/ubb/showflat/Number/4279648 The newest Magnefines are metal cased...

Should also shear faster. Certainly will cost a lot more. Overkill for a lot of schleppers. Difficult to find directly comparable CCV specs but I didn't see a huge difference a 5W20 syn and a 0W40 syn but there are so many variable that you would have to make sure you were comparing very...

I had older MF that weeped a very small amount for a while but soon stopped. Never saw one that blew up! I'm waiting to see what the new unit looks like on the inside. I have a few of the old ones left and am not afraid to use them up. I like them because they are such a simple and cost...

Originally Posted By: Shannow Did anyone in the thread suggest that we all should be running 40 or 50 grades ? That's not what I said. YK attempted to discount my points by asking, in a snotty, condescending tone, if I had 32 vehicles and 32 samples. I replied in an equally snotty way by...

Originally Posted By: Y_K Can you summarize your 1. Questions 2. Answers in a laconic text, please? No. Frankly, I don't care enough. Originally Posted By: Y_K I take it you had more than 32 sample vehicles in your experiment[s] with more than 32 samples per vehicle to come to...