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MTG was recommended by Amsoil BEFORE Ford changed the recommendation to DCT fluid (a very light synchromesh). Now, Amsoil has no formal recommendation as to avoid issues with the MT82 all together. However, it's been proven MTF (Amsoil Synchromesh) works well in this transmission, allowing for...

Don't use MTG, use MTF.

Laws mean nothing to big oil companies. They make claims all the time that mean nothing. Most of them have been advertising "fully synthetic" for years, yet are hydrocracked petroleum "highly refined dino oil". Castrol started this trend. I wouldn't trust them at all. What really gets...

That's a tall claim, considering Castrol refuses to post the spec for NOACK Volatility on this lubricant. They were also the company that began marketing hydrocracked petroleum as a "full synthetic". Trust me, it's not a base oil change....only an additive change. Believing otherwise is insane.

It will only take about 2.75 quarts before the transmission is full. Make sure you fill it while the car is level. Rear diff.... Amsoil 75W-140 – buy 3 quarts to insure you always have enough no matter what differential cover is installed Don't forget the friction modifier...

Anyone can buy Amsoil at wholesale cost by signing up as a preferred customer. Preferred Customer

Agreed, MTF is the better choice.

It's not uncommon for sump temperatures to decrease when a less viscous lubricant is used. Even Dr. Haas noted the change. Of course, RP doesn't post ANY information about their new reformulations. Why, because they are hiding the truth. 11.3 cSt was taken from a VOA submitted to Blackstone...

You also have to remember that less viscous lubricants release heat more rapidly, effectively running cooler than a more viscous lubricant. This means a less viscous lubricant may be slightly thicker in the engine than rated, while the more viscous lubricant may run more on the thinner side of...

A UOA will only reveal the base oil used if oxidation is tested. Not all labs perform that test. OAI does, a.k.a. Polaris Labs. 5W-20 engine survivals in the past 10+ years is more reason to understand that thicker isn't better. On BITOG forums, I learned a phrase that meant a lot. "Thin as...

A Defining Moment For Synthetics By Katherine Bui published October 1999 Lubricants World While the field is not wide open, a new ruling confirms that the definition of "synthetic" is still largely in the hands of marketers. Part 1 of 2 Synthetic. The word has become almost a proscription in the...

The Virgin 5W-50 VOA you linked me to was discovered to be a mistake by Blackstone labs. The same sample was later tested in a UOA, and ZDDP was much higher (normal API SN range). The lubricant would never have less than 600 ppm of Phosphorous to be considered API SN certified. Amsoil 0W-20...

KC, one more important fact about Motorcraft 5W-50. Before it shears, it actually specs like a 20W-50 above 32*F (0*C). Amsoil 10W-40 AMO is far less viscous at 32*F compared to virgin Motorcraft 5W-50. Therefore, a true synthetic 10W-40 is a viable option in this engine. Here are three...

KC, looks like Ford left it open ended for oil selection, as that can be interpreted in different ways. I do know that base Royal Purple is overpriced and is no longer a true PAO/Ester base oil. Travis, owner of SVT Performance, submitted a sample of 5W-30 HPS to Blackstone in the past year...

Correct, it's a 30 grade viscosity. My recommendation for extended session road course racing is Amsoil AMO 10W-40 (14.6 cSt @ 100*C). No need for anymore viscosity, or HT/HS of 4.2, as it's sufficient film protection even near the hottest engine parts. Yep, the first "assumptions" about Red...

The 4.6l 3V was on average a 1 mpg increase. I have one GT500 owner on SVT Performance who experience a 2 mpg increase in his aluminum block GT500, however, he only drives it long distances to work on the highway. Rarely ever in stop and go traffic. That's another problem I have with...

It's enough to show mpg increases in the GT500 community. Many users report mpg increases after switching to Amsoil AMO 10W-40. Now, I already know what you are going to say..... "Motorcraft 5W-50 is more viscous, hurting economy." Even though MC 5W-50 shears under 14.6 cSt @ 100*C, it still...

I never said they were not measurable, just not something you will never see reported on a UOA. This is where misleading internet information comes into play. So many more factors involved than UOA reports alone. If you are not opened minded, ready to relearn what you have already learned...

The point of diminishing returns is what you speak of, and I agree. There is a point at which a product becomes so expensive, offering so little in return, it's not a viable option. However, speaking of true synthetic PAO and Ester based lubricants doesn't always fall into that category...

Wow, you guys are not listening. I said, "If you intended to buy off the shelf, Ultra is a better choice." It's the new Gas To Liquid base oil, far lower NOACK, and is returning far better UOA reports that anything else off of the shelf. You can believe when you want, as S197 members have...

You are reaching, and you are ignorant to the fact. We are talking about long term averages and the car making the same long road trip, the same times of the year, the same speed, the same direction, etc. Amsoil 0W-30 is more viscous than Mobil 1 5W-20, not less viscous. Also, M1 5W-20 was...

Pennzoil Ultra if you are buying off the shelf. However, Amsoil Signature Series has always been the #1 performer in a Ford Modular. 1. At this time, no. Not that I am aware of. 2. See #1. However, at one time, Amsoil commented that if GTL was successful, worthy of using, they would change...

In Amsoil's formulations, it's middle of the road between "0W" and "10W". Since 0W-30 doesn't shear, there really isn't a need for their 5W-30 Signature Series. I reserve 10W-30 for hot climates that see little, or no winter. I can tell you one thing, the oil Mobil 1 supplies to their race...

This has been answered in detail on SVT Performance. Thread Post Link

Thank you for the information, but I have more questions. The more you teach me, the more I want to know. Which BMR non-adjustable lower control arm (stock length) do you prefer, and why? Billet Aluminum Boxed with poly/poly Boxed with poly/spherical What are the advantages/disadvantages of...