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The UOAs on my 4.6L V8 always read abnormally high Silicon, but my wear metals are always good.

I'd put that product to the curb just based on the gross amount of syntax and grammatical errors all over that web site. It looks like some idiot wrote that up in his basement.

Took me a while to reply! 1) Don't have an argument with this point. 2) I had been using synthetics for three years in this car, so I can't agree with this point. 3) Yes, my car burned the oil through the valve seals, so you're right about that. 4) Actually, I had used Syntec 5W-50 for quite...

My old 1993 Grand Marquis had 169,000miles on it when I went cross country (through AZ, NM and such hot places). I drove the same route both ways (~5000 miles each way). Going out there (Seattle), I used M1 15W-50 to control the valve seal-related oil consumption. It didn't burn a drop, which I...

If getting your car "chipped" causes it to fail emissions, run rich and clog the cats, or any other negative effect, then you should sue the tuner, because he doesn't know what he's doing. BTW, your mileage may go down, but that's because you might have your foot in the tank more often to "test...

Wow.

I was just about to drain and fill my GMC Envoy tranny with Mobil 1. This ATF really causes slipping? It's marked as being a Dextron III fluid so why would that be? Where did you hear that from? BTW, there are additives that bring Mercon fluids up to Mercon V specs, and the Mercon V spec was...

Hmm. I already have about 2500 miles on this oil. I think I'll try 7,500 miles with this M1 filter and see what happens. When the cold weather comes I'll bring down the interval to 5,000 due to the cold starts. Plus, my commute is about 7 miles of highway and I only live a few blocks from the...

[ September 24, 2003, 12:18 AM: Message edited by: johnicon ]

I changed the tranny fluid to Mobil1 in my 1993 Grand Marquis with 125,000 miles on it and it was fine.

Linky Linky [ July 10, 2003, 03:04 PM: Message edited by: johnicon ]

Yes they can. Any auto maker will seize any little thing to avoid paying for warranty repairs.

Yes, it was a Fram filter...hmmm, maybe I didn't seat it properly...

Yeah, I get on the car a lot. It's not like I'm laying patches at every stop light, but I like to go WOT-ing around now and then. Do you really think I should bother switching to 10W-30 for the summertime? Maybe when I change out this batch of 5W-30 after 6000 miles (sometime in August) I'll...

This is the 3rd oil change that I've used M1 5W-30. I bought the car with ~7,200 miles on it, at which point I started with the M1. Any more comments from the peanut gallery?

2001 Crown Victoria LX Miles on car: ~21,000 Miles on oil: ~5,100 Make-up oil: None Filter: Mobil 1 Oil was used between April 1 and June 6 in NYC weather. "Enthusiastic driving" As Tested Average Aluminum 3 5 Chromium 1 1 Iron 14 22 Copper 3 11 Lead 1 2 Tin 0 1 Molybdenum 76 31 Nickel 0 1...

I work the overnight shift, so my 15 mile each way commute is usually traffic-free and 80% highway. Often (usually once a week) I'll take a nice long 75 or 100 mile drive just to keep the engine gunk free. I'm thinking 5,000 miles on the oil and the filter would be safe given these numbers, but...

I have a 2001 Crown Victoria. 4.6L V8 with 18,500 miles. I always use Mobil 1 5W-30 SS and a Mobil 1 filter. What oil change interval can I safely use this oil and filter for? Thanks for the opinions.

I switched to Mobil 1 in my '93 Grand Marquis with 89,000 miles. That was four years ago and the car had 201,000 miles when I donated it this month. Still ran fine.