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All, I'm just a regular guy who changes my own oil and am relating my observations to you. My comment regarding bigot simply means that I loved M1 for ~20 years and was always quick to recommend M1 to others based on my experience. The main reason for my discontent is that I seam to have the...

Until recently I was a bonified M1 bigot since the mid 80's. Ran it in a 85 Volvo DL and have seen first hand that there was virtually no Cam wear on the engine at 80K miles. I've decided that Exxon-Mobil M1 is not the same quality product anymore. Based on several threads regarding Pennzoil...

Reminds me of that commercial where the guy gets out of the shower and towels off with that dirty towel. Auto-RX suspends dirt in the oil that's how it moves it to the filter. At some point the dirty fluid can't be filtered as the particles are too small. That's why there is a rinse phase in...

Been running the 75W-140 this week and it's definitely quieter. My mileage this week was not significantly worse, > 22 MPG in 99 Crown Vic with combo but mostly city driving. I'm going to keep running the 75W-140. In 5128 miles my minimum mileage is 19.6 and maximum highway was 25.2 driving...

Thanks to all that have replied. As a preventative measure I changed the original 80W-90 lube and installed Mobil 1 75W-90 at about 41K miles. I noticed some gear noise under load with the M1, I did not notice any noise before changing it. At about 43K miles I changed to Amsoil Severe Gear...

I'm changing the rear-end fluid in my 99 Crown Victoria with 3.27 non-lock gear. The 2002 Crown Victoria and newer uses 75W-140 synthetic lube. The original spec for mine is non-synthetic 80W-90. My inclination is to use the 75W-140 when I install the Amsoil Severe Gear lube. Anyone have any...

I just replaced Mobil 1 75-90 with Amsoil 75-90 SVO in a 99 Crown Vic 8.8 non-locker. I just got the car with 40K miles. What was probably the original lube was dirty. I only ran the Mobil 1 for about 2K miles and it looked very dirty. It also looked airated. I used the within half inch of fill...