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They use a PAO synthetic. I don't believe it is any off-the-shelf blend. It is more of a general purpose reference oil with common additive packages, but it does represent a low drag 5W-20 so it is my understanding it's difficult to beat if you want the "resource conserving" approval. Oils...

Depends on the base stocks used in the oil. The whole point of the new mPAO's and GTL base stocks is to avoid using polymer viscosity improves as much as possible to get a high viscosity index that remains for the life of the oil. There's a difference between a high VI oil that stays high VI and...

Some great information on motor oil base stocks: http://www.cpchem.com/bl/pao/en-us/pages/faq.aspx Of note, I have NOT found any information to correlate "thinner oils cool better" simply because they are thinner. In some applications using capillary action, they do circulate more easily and...

That would be my advice, especially if you care at all about warranty or long term reliability and are on pump gas, it's by far the least risky option. Drive ability is going to be impressively OE like as well. Power Pack 2 is geared more towards road course (aka short or mid-sized tracks) /...

BTW the Ecoboost 2.3L uses the same 2 inch bearing size as the 5.0 and with a slightly tighter clearance range of 0.0011 to 0.0020 inches and calls for 5W-30. The 5.0's clearance range is 0.0011 to 0.0027 inches and calls for 5W-20. On the tightest end of the range they are the same. On the...

Just wanted to add and FYI that Penzoil Ultra Platinum is now API SN Plus. I recall someone posted a while back about LSPI compatibility. My 5W-30 PUP came in the mail over the weekend from WM and the bottle is listed as SN Plus now. LSPI isn't an issue for an NA 5.0 or any NA engine in terms...

Just wanted to add and FYI that Penzoil Ultra Platinum is now API SN Plus. I recall someone posted a while back about LSPI compatibility. My 5W-30 PUP came in the mail over the weekend from WM and the bottle is listed as SN Plus now. LSPI isn't an issue for an NA 5.0 or any NA engine in terms...

After market tuners do not re-map all 2,400 cells in their "tweaked" tunes, they don't use data packs their cars to get cycle by cycle data and their tuning is based on averaging at 1/25th to 1/37th of the actual data because OBDII can't report anywhere near cycle by cycle. Ever heard of...

It would be interesting to know indeed. I favored TriboTEX myself (that is what is in my GT since 20k miles, now at 30k) because there are no chemical friction modifiers that affect the oil formula, the tribofilm is 25% more durable than the hBN based tribofilms and the R&D behind it is notably...

Just for reference hBN in CeraTek / Archoil and Synthetic MSH in TriboTEX does not chemically alter the oil. So the dry lubricants themselves have no bearing on the oils properties by itself other than altering the surface of the metal by promoting adhesion. However CeraTek and Archoil do hqve...

HBN (hexagonal boron nitride) solid lubricants used in CeraTek / Archoil and Sythetic MSH (Magnesium Silicate Hydroxide) DLC coating which is the basis of TriboTEX both promote better oil adhesion due to their porous structure and while the DLC films formed by them will not cushion impacts by...

A couple of good articles on oil viscosity and additive packages and how they affect wear: https://www.machinerylubrication.com/Read/518/motor-oils http://www.substech.com/dokuwiki/doku.php?id=ecological_aspects_of_engine_bearings Interestingly enough Clevite recomends a 0.00195" clearance...

The yellow filter is cellulose aka paper. No need to replace it if its new as its the GT350 OE filter. I'm advising againt replacing it with a reusable synthetic filter because your either giving up filter efficiency (oiled cotton) or significant filter capacity (dry flow types) for 5-7hp at...

Its literally the GT350 factory air filter. Wix has a clone of it for $29 or you can fins the original motorcraft one for about $36 online using the OE partnumbers listed above.

In reality any of these off the shelf synthetics are good enough for most people's street car applications and will perform as well as MC Semi-syn or better. MC Semi-syn is actually a pretty decent blend, especially the new API SN Plus formula.

Very interesting. Honestly it boils down to temperature application. It seems 5W-20 is adequate to handle even FI loads without issues pending you don't over heat the oil. In reality the greatest load on the bearing is typically not the ignition of the fuel / air mixture (power generating...

I was quite surprised at that as well. Their own racing school instructor cars with the stock ECU calibration run 5W-50 and an oil cooler...yet they don't suggest at least a 5W-30 for their SC kit? I'm sure 5W-20 has absolutely no issues until it gets hot, but I would think the added load of FI...

Its interesting that Ford Performance says to stay with 5W-20 for their super charger kit but Roush requires you to use 5W-50 on what is essentially an identicle kit. If @Scottys 2017 is not having issues on MC 5W-20 semi-syn with the super charger AND having had the dreaded tick then any decent...

I second this. GTL base oils perform on par with PAO base oils but at a far lower cost. While they are technically a hydrocracked group III, their concentration is 80% Isoparaffins 20% Napthalenes vs most group IIIs that are 40% Isoparaffins 60% Napthalenes. This makes them highly stable and...

So thus far we know VCT constants are same for S550 GTs but what Ford Performance told me about S197s is true, that they are different and the calibrations were tweaked for the higher viscosity oils. Which is fine. What Ford's engine development team could do then is not what they can do now...