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High efficiency filters usually have a short service life, rule of thumb being longer service life = lower efficiency & vice versa. I was warned by an analyst years ago that the old Pure One would clog up early due to their high efficiency, so change them out sooner. But high efficiency...

A big shop vacuum would also open the bypass valve, no?

I went back to Ultra Synthetic, after all the hoopla about the Champion-made ruffled bypass bracket letting unfiltered oil through. Yes they cheapened it but it still filters more efficiently than any other. Wavy pleats I think are a non issue. We don’t know the history of the filters...

Amsoil buys it's base stock from EOM I believe, so it's a good chance they are using AN in place of PAO? The ONLY Amsoil Euro that meets all the specs that @Kalle.J mentioned is the 0w-30, the only one that meets SP specs. Lake Speed Jr. says AW & detergent additives (Calcium for one) compete...

I carry a bottle of Techron concentrate when I'm on the road in the motorhome, not a lot of top tier stations in small towns in Texas hill country. I pour about a third of the 20oz bottle in at every fill up, which is usually 40-50 gallons. Lake Speed Jr. says Shell With V-Power actually lubes...

Thanks for C&P, couldn't really see the date code, looked like mid 2023?

Could it be they cleaned up their act?

Thanks!!

Thanks, @BrendanC, those FE's still looking pretty shabby......

Thanks @Chumango, now that you are cutting filters open, I'd love to see the Endurance when you change it. Maybe do a flashlight test on it too. I cut an Ultra open a few months ago, no light leakage, no wavy pleats, either. I think because I only run 4k miles or so the pleats aren't writhing in...

I agree with this completely. Every vehicle I have has the larger size filter, what that does effectively is slow the flow through the media as there is more media to flow through. I have made the comparison to a river, it is moving faster through narrows but slows down through wide spots. The...

Interesting, I had never heard that study could be flawed. I knew it had been around for years, but it's been 37, wow! All this worry about 5 micron particles causing the most damage is not warranted? No full flow filter will filter a substantial amount of 5 micron particles, so increased OCI...

How long was the Fleetguard in service in your Expedition when you started hearing startup noise? My thought on nitrile vs silicon is time in use. Commercial fleets, at least the ones I've been a part of, service their vehicles every 15k miles or 90 days regardless of mileage. I'm sure heavy...

Your last sentence goes against Lake Speed Jr.'s thoughts that the higher the mileage rating, the lower the efficiency. Filters that are built to last longer are less efficient so they don't clog during that lifespan, according to him. I have a new XG filter here, the box printed in 8/24, that...

My dad used to have the oil changed on his 55 Plymouth every 2k miles & filter every 4k. I think he was just cheap. It had a cartridge filter but he had it done at the service station down the street. The 53 Chrysler we had before that had shared oil between the engine & transmission (12 qt...

In the UK 5w-30 is recommended: https://www.autodoc.co.uk/car-parts/engine-oil-12094/ford/c-max/c-max-ii/56977-2-0-plug-in-hybrid?categories%5B%5D=1862

In my C-Max, you can set it for “EV only”, “EV later” (gas only), or auto. This system has a 12v battery to run accessories & starter/ignition, etc. so it seems like the ICE is stand alone. It is an Atkinson cycle engine, however, so low speed torque is sacrificed because electric is used for...

I see now that it does, albeit nitrite instead of silicon. I was going by gasman’s comment, I did not read the article. What is the main advantage of silicon over nitrile in an ADBV? Better heat resistance? Will the nitrile buckle & allow back flow?

Even if batteries degrade you still have the ICE & just drive it like a regular car. Although a gas car with limited trunk space & no spare tire would be undesirable…..

Hey, I just acquired the exact same car from my sis-in-law with 33k miles, lol. She bought it in 2017 with 25k, took it to the dealer every time she got a notification, including all the recalls & oil change every 6 months. Dealer used 5w-20. Right after I got it, I got on the throttle with the...