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    GM Brake Fluid DOT 3 Recall

    Why not go with a Dot 4 brake fluid ?
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    Input on changing 15w40 brands.

    I must have missed your reply. Before I would consider Drydene products, I would have to see a virgin oil analysis, and possibly figure out who the real blender(*) is and more info on the additive package. Now that said, the reason I chimed in is that wayyy in the past I knew some of the...
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    Input on changing 15w40 brands.

    I am puzzled as to why you include Drydene on your list- although its a very old company, they used to be in the business of gathering and refining used motor oil. The company has constantly been shrinking over the last 20+ years so that its now just a brand name. I personally would never...
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    Kill your Predator, Project Farm attacks

    If you look at the video as pure entertainment, it was pretty good. I wonder if this test was originally supposed to have some scientific/consumer validity, but went off the rails so he turned it into a torture test. But we did learn that valve grinding compound is dangerous stuff.
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    Possibly the dullest vehicle purchase of my life

    How do you plan to shorten the frame ? I thought they had special heat treatment or other such magic, and welding on the frame was discourage ? PS- I know next to nothing about big trucks.
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    Vibration (like buffeting) 68-73MPH new tires, 3 different shops checked

    I got the impression that the NVH software was $399 based on the first video I watched, but realized later that its really $100. I might get that for my own personal use.
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    Vibration (like buffeting) 68-73MPH new tires, 3 different shops checked

    I forget which channel, but I recently watched a video where they were troubleshooting a similar problem, and it turned out to be dirt/rust on the brake rotor and hub. Previous repairs never properly cleaned the tire/rotor/hub mounting surface, so they got very strange vibrations. Also, your...
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    looking for 20w50 with cat friendly ZDDP

    That sounds like an interesting idea !!
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    looking for 20w50 with cat friendly ZDDP

    I had a talk with Amsoil today, and got the specs on a bunch of different oils. This is the 20w50 ARO AROQT BORON0 SODIUM0 MAGNESIUM0 CALCIUM3614 PHOSPHORUS1258 ZINC1384
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    2021 Chevy Equinox brake job

    I just did the rear brakes on the wife-units 2017 Escape. There is a procedure you can do that retracts the electronic parking brake actuators- hit a few buttons in the right order. Far far simpler than removing the actuators. I feel your pain on the recessed brake caliper bracket bolts- I...
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    looking for 20w50 with cat friendly ZDDP

    That is my main worry- slowly poisoning the cats, not clogging them.
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    looking for 20w50 with cat friendly ZDDP

    There are plenty of oils out there that meet the NMMA FW-C standard, and the Quaker State 25w40 has a reputation in the hi-performance marine industry as just being average, while being very high priced. I would rather not use it.
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    looking for 20w50 with cat friendly ZDDP

    There has been occasional VOA of this Quaker State 25w40 oil, and it has been shown to be nothing special over the last 10-15 years. So I do not have any reason to think its radically changed recently. My quest is an alternative to the Quicksilver 25w40 oil as I stated in my original post.
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    looking for 20w50 with cat friendly ZDDP

    That is a huge help- but steers me back to the original question should not be "what API level" but "what level of phosphorus is harmful given average oil consumption, on a 10w+ or higher oil". But its not an AI error, rather an error in my question. Is this a correct question for my use case ?
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    looking for 20w50 with cat friendly ZDDP

    Here is the problem- marine engines run at 50-75% load at cruise, and even the best are going to burn a quart every 50 hrs or less. That is like burning a quart of oil every 3000 miles. From an oil cost perspective, one or two quarts per year at this rate is certainly acceptable, but if the...
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    looking for 20w50 with cat friendly ZDDP

    I do not like the Quicksilver brand, although the 25w50 is a very new product. The 25w40 that is recommended is very expensive for a semi-synthetic blend.
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    looking for 20w50 with cat friendly ZDDP

    Overkill- do not blame AI on this, rather you do not agree with the source, and your attachment does not clarify things. Perhaps my question was not comprehensive enough in this case. What I asked Google Gemini was "what API level is required to provide protection for catalytic converters"...
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    looking for 20w50 with cat friendly ZDDP

    I forgot about the Amsoil 5w50, but I am not comfortable running that wide of a spread on these engines. I have been in contact with Amsoil Tech support and their 15w40 SS Diesel oil has SN across the board, while the 5w30 has SN+. This is Google Gemini from Kendal websites- which...
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    looking for 20w50 with cat friendly ZDDP

    Looking at Amsoil 20w50 the zddp is around 1500 ppm, which makes me think is not very cat friendly. I got this from a VOA on BITOG for Ams 10w40 which I think has the same additive pack. I would prefer to stick with synthetic oils, so I ruled out VR1. The Mercruiser oil is nothing special...
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    looking for 20w50 with cat friendly ZDDP

    The engines burn no appreciable oil and only have 105 hours on them. The cats are in a cartridge that can be removed from the water-cooled exhaust manifold, but are still tracked by the engine computer, so it safe to assume warning error and the danger of limp mode could occur if they were...
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