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The short trips are contributing heavily to the dilution, especially if you are not able to hit the highways for some extended driving at points in time. It takes a while on the highway to burn off the dilution and even then it does not fully disappear. The only cure is to change the oil.

It could be because the boost happens more at 7K ASL than at sea level, but I don't really hammer my Wildtrak that much, and I stopped doing warm-ups in the winter. It could be normal behavior, but I suspect I have a fuel system issue. The 2.7L has dual injection (MPI and DI), and one would...

All of the kits sold by Amsoil include fuel dilution testing. I would reach back out to Polaris/Horizon and ask what happened during the testing--alternatively, they may have left the number off the report.

Must be something the dealer can do via the computer--unless I am blind, I have never seen a setting that allows for multiple percentages.

So far, so good, but the next few UOAs on the oil will tell the tale. Given its construction, I think it will filter better than the OEM, but we need data to know for sure.

Cellulose is not as efficient as synthetic media and MC does not list their efficiency rating so you are left guessing at best as to how good or bad it is. I have not priced an MC filter lately, but I am guessing that if they are cheaper than a FE, it would not be by much.

I know that my 2.7L has a lot of fuel dilution and so I use M1 ESP 0W-30 which has a pretty high viscosity and remains a 0W-30 despite the dilution. The FRAM Endurance is (IMHO) the best filter on the market for the money. Hope this helps!

The Motorcraft PDS for the 5W-30 Synthetic Blend (which I assume is the factory fill) states that it starts at 10.8 cSt @ 100° C which, at 8.9 is really close to your calc (17.6% viscosity decrease in 1K miles). Which... is... shite.

If my initial UOA is an indication, MC is shite compared to something like an M1 ESP: MC 5W-30 @ 1K miles & 2.5% dilution = 8.9 cSt @100° C OR a xW-20 viscosity M1 ESP 0W-30 @ 4.5K miles & 5.0% dilution = 10.8 cSt @100° C OR a xW-30 viscosity

I do not believe that it does--especially given the details and requirements of the WSS specification that covers the oil. I bought the spec and was unimpressed--ANY API SN, SN+, or SP oil that is GF-6 exceeds the requirements.

As you and I have discussed, I am not impressed with HPL other than how much they can charge for an oil that has ZERO industry approvals. It is the "darling" of motor oils over on BobisTheOilGuy, and it is touted for the amount of esters and cleaning power that it has--err...or not, looking at...

Motorcraft oil is nothing special, as are the Ford WSS specifications--they are a nothing burger, and any API specified oil can meet OR exceed them. Motorcraft oil, unless something has changed recently, is made by Conoco Phillips--none of their oils are considered top shelf by any stretch of...

Is the bottom photo of HPL before running another oil? For the cost and lack of ANY industry certifications, color me completely unimpressed with HPL.

Use 75W-140 in both. I used 75W-110 in the front because I had it. When I run out, I will be running 75W-140 in both.

New UOAs for the rear axle and the engine--UOA #3 for the axle and UOA #9 for the engine. Looks like I need to take it into the dealer (and take care of the rear camera recall as well as the popping that has developed in the front end). The fuel dilution is still too high especially with the...

Not to rain on that, but all you have to do is search, there are plenty of engines that have used normal maintenance products and have lasted 500,000 miles or more. The POS 3.6L Wrangler engine managed 625,000 with no special anything and believe me that's a miracle given the fact that mine died...

Well...to quote a wise man...every day that you use it will be one day less that you can. 😁 Color me incredibly skeptical that the engine will be the root cause of the Bronco going tango uniform...

The ultimate question which is not been answered is how much longer would the bypass system make the engine last vs. using high quality oil and filters and changing it on a reasonable basis. I totally get wanting to make your vehicle last as long as possible, but there are literally millions of...

I have never found a place where they publish the efficiency ratings for any of their filters and none of their filters list ISO 4548-12 test results. Amsoil did some testing a few years back and the FL-820s was 20 microns @ 93.7%--plenty of other filters that blow those results away. MC...

With the fuel dilution happening in Ecoboost engines, the oil will need to be changed long before 20K miles--more likely far less than 10K miles. A UOA using gas chromatography is the only way to check the fuel concentration which would not be a concern in a 2002 Ranger. Unless you are running...