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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...

Have an '08 Chevy Uplander as a work schlepper. It has the 4T65E transaxle in one of it's final applications. It is somewhat notorious for a condition called "slip and bump," whereby one of the mainline solenoids is slow to respond and on acceleration from a stop the trans slips for a second due...

Hopefully nobody got too blue in the face waiting for this. A lot of data to go through, a busy schedule and other priorities... what can I say? Background: I installed a differential pressure test setup on my F150HD (5.4L 3V Modular V8). Mine is a two gauge setup with senders on either side...

As promised, and by to popular demand, here is the P1 PL24651 run 15,000 miles and almost 2.5 years in my F150 5.4L. Fair bit of wavy media on the side where the pleats are joined. ADBV was still very pliable and though the filter had sat in my filter drain can for about a month, there was still...

REMEMBER THAT THIS IS A 15,000 MILE RUN ON CONVENTIONAL OIL! Oil: Motorcraft 10W30 HDEO Vehicle: 2005 Ford F150HD, 5.4L V8 Notes: Experimental run where the oil was run 5K, tested including a particle count, then a 3 um bypass filtration system was installed. The oil was tested again at 10K...

Got the oil changed last night. The oil ran 15,496 miles. Conventional MC 10W30 Super Duty HDEO SM/CJ4. P1 filter in there the whole time, 10K of that with a Racor ABS bypass installed (3um absolute). I have three samples to send off for tests, two for UOAs (two different labs) and one for an...

The Auburn Gear High Performance limited slip (cone type clutches) in my '05 F150HD requires a conventional gear oil (and let's not have that discussion again) with a friction modifier (FM) added 3 oz./qt. of gear oil. I had been running a 80W90 but wanted a better cold weather/warmup viscosity...

Was browsing in my local Rural King store, which carries Mystik (branch of Citgo) lubricants. Saw a 15W50 CI-4 semi-syn oil on the shelf there. Looks like more a HD lube than a mixed fleet oil because it doesn't have any gas engine qualifications, but many diesel standards are listed. Looks good...

The recent upswing of posts on this vintage bypass system has got me curious as to efficiency ratings. Have any of you collect anything like that from the past or present? Go ahead and pass along anything you might have seen but I would like to know if any industry-standard type efficiency tests...

I presume this is the right spot for this. I recently bought an old John Deere combine (a 3300 if anyone is interested) and as most combines do, it has a large number of chains to be lubed. A combine is a dirty environment though most of what is flying around is non-abrasive vegetable chaff...

Nothing much to report on currently. Thus far, I have data for the setup I am running now ( P1 w/10W30 MC Super Duty CJ-4/SM) at 12K miles but I am still collecting filters for new-state testing, which won't start until I have finished the 15K interval on the MC oil I am currently running. I...

I've been using up a case of RP grease over the past coupla years. I use a lot of grease on my farming equipment. I can't speak to any issues of lubrication... AFAICT it's doing OK in that regard. The issue is with temperature. If it's even moderately cold, it turns to ice cream and won't pump...

Well, I got my differential pressure gauges installed. Works fine. Instead of buying a single gauge, I just hooked up two Isspro stepper type pressure gauges with senders on either side of the filter using a Pareto base. As you can see by the pics, I am using all the ports on the base now. The...

How about helping build up a data base by answering the following questions: 1) Which restriction gauge? 2) What vehicle and engine? 3) What air filter brand, line (e.g. Fram Tough Guard vs Extra Guard) and if you have a stock airbox or a CAI or some other aftermarket air filtration system...

You might have Fram Derangement Syndrome if... - you won't use anything on your engine labelled "Fram" regardless of the actual features of said product - you use the term "cardboard" instead of engineered fiber when referring to Fram endcaps - you think wavy pleats are OK in anything but a...

Cadchris brought this up on the oil filter board and I thought it was worthy of discussion here, namely the "Current Air Filter Study" he linked to there from GM Truck Central. While not as good as the Spicer study, it's methodology is pretty good because he did that test essentially the same...

Is this not the "General" and "Off Topic" Area? I don't see why this isn't a legitimate topic and I don't see why it can't be discussed. It's not politics, it's corporate policy. And it's auto related. Devin McLean is being hosed by AutoZone and I hope they feel the heat. Until they do the...

A while back, I interviewed some industry experts on the shelf life of oil filters. I was advised that 3-5 years is a safe average and that cellulose media based filters are more at risk to high humidity. A rusty tapping plate is a sure sign of poor storage and a filter so tainted isn't a safe...

Have not yet been able to force myself to virgin autopsy these, but here are some basic visuals of the two Honda application filters. The XG3593A is the application for many Hondas, including my '00 Accord V6. The XG8317 fits some new Hondas and Acuras as well a a plethora of other cars. In...

Moderators, forgive me for straying from the usual subject format but I have a strange UOA to relate for the general interest and consideration of the BITOG PPM monitors. Oil: Motorcraft Super Duty HDEO 10W30 API CJ4/SM Vehicle: '05 F150 5.4L V8, sump capacity 7 qts + 2 qts added for bypass...