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I have 123k miles on my 2005 4.6 Mustang GT. I have used synthetic or syn blend 5-20 its entire life with Motorcraft filters. The engine is as quiet as it was the day I bought it. Key to these 3 valve engines is good quality oil with a nice additive package and 4-5 k oil changes and Motorcraft...

2004 F 150 Out: Unknown. 5w20? In: Pennzoil Conv. 5w20 83400

I bought full syn there several years ago and it seemed to be thin and clear compared to Mobil 1. went back to my regular brand after 3000 miles. I just didn't feel comfortable looking at it after that.

These tires run good on our fleet trucks. date could mean 3rd day of january 13 like 03 jan. 2013. code seems to say 3rd week of 2013

I used Castrol mostly last year cause it was on sale and had alot of it. I have Mobil 1 QSUD Shell and PYB coming up. Its all good!

cold temperatures effect the mileage I get alot. I watch the tire air pressure closely and still lose 1-2 mpg. Some gas is just junk. I get the best results with shell regular. I get about .75 miles per gallon better year round and up to 1-2 mpg more on the highway. Cant explain it but it is...

I have used it in my Shelby a few times. It seems to be good oil but I heard it can shear down to 40wt. if driven hard. I think a guy with a Porsche posted somewhere on it. I might go get me some before the sale ends.

2007 Fusion SEL 49500 miles out Motorcraft Syn Blend 5-20 Motorcraft filter In Castrol Syntec 5-20 Motorcraft filter

Yep. Went from 3.09 to 3.49 here in Indiana. I smell a big rat

It's good to see my money isn't going to waste. WOW!

2005 Mustang GT 92000 miles In Castrol Syntec 5-20 Pure One filter Out Castrol GTX 5-20 Motorcraft filter

There are thousands of crown vics still on the road after the police run the stuffing out of them on motorcraft syn. There are pretty good reports back from the labs after 6-7000 miles too. My 4.6 motor loves the stuff. 88k miles and purs like a cat. I have switched to whats on sale too but...

09 Sonata 2.4 OUT Hyundai oil and filter 29000 mi IN Valvoline next gen 5w20 and Pure One 05 Mustang GT OUT Castrol GTX 87000 mi IN Casttrol GTX 5w20 Motorcraft filter 07 Fusion 3.0 OUT Valvoline Durablend 47000 mi IN Motorcraft Blend 5w20 motorcraft filter

I think it leaked out all over the roads back in the 80's. Those old 70-80 cars were not keen on that stuff as I recall

The OLM on my work chevy truck says 20% life left @ 6000 miles. mostly highway and country driving.

175 quarts? Yikes!!!! I thought I was bad with about 90 quarts in my stash. LOL Originally Posted By: 2010_FX4 Originally Posted By: tig1 Why switch from PU? A few reasons: Cost - PU OC = $51 versus $17 for MS5K. Experiment - to determine how well a conventional will perform versus a synthetic...

Originally Posted By: Gene K Good luck on getting it to hook on the 3.73 with that low 1st gear. The fastest pass on a showroom stock car was a 3.31 geared car last I heard. Given that the car is now modified I think we can forgo the 5W20 recommendation. My car runs 0W-40 Mobil 1 for open track...

Mine is dead on too. New cars are calculated and ran through the computer so it should be accurate unless the tires are off size. I can change the tire size on my handheld SCT and it will adjust the speed accordingly. Years ago they were way off though, they usually read faster as I recall

We just upgraded to 6.0 DSL for 24.99 a month for a year then its 43 I think. we watch hi def netflix while the kids are on their kindle fires and computers at the same time. No problems so far. Can't beat the price.It gets the job done just fine for us.

So....They say run it again only LONGER next time? I would be worried about the iron and probably change brands of oil and change it at about 5k and see what I got. That's just me Sometimes I don't understand some of blackstones advice