Easy Al, what you do is take the same Castrol you have been selling in the US as a Synth blend and put a new label on it calling it a Synthetic even though it still uses the same organic base. Whatever happens, don't forget to mark up it at least a dollar above what you charge for a regular quart of Castrol, wouldn't want to let on that it's nothing special.

lol

i still and always run dino oil in my cars, my bike though, that got synthetic Mobil 1

german castrol is made in germany. its different. look up the tests if you dont believe me

They significantly deduced the zinc, phosporus and sulfur levels in all the diesel oils. Look on the back of the diesel oils and you'll see CJ4, that's the new oil with low levels of zinc. If you find CI+4 then you have the older diesel oils, although I think all of the CI+4 oils are no longer available. This was done in response to the EPA and emissions placed on the 2007 and newer diesel trucks. High levels of these compounds in the oil/fuel (all diesel fuel is now Ultra Low Sulfer Diesel, ULSD) will clog the particulate filters at an accelerated rate.

Back on topic, the stuff they took out of CI+4 diesel oil was the stuff that lubricates/cleans really well, especially in flat tappet applications. So the newer diesel oils don't offer the same lubrication packages as the older oils did. They may be better than currently available gasoline oils, in flat tappet applications though.

For those less initiated to search on their own.....

Amsoil acknowledges that GC is a quality oil (not sure what that means?)

http://www.c66racing-synthetics.com/...20Analysis.htm


Bob the Oil Guy - 15 pages of info....

http://www.bobistheoilguy.com/forums...&Number=718643

The bottles come in Lederhosen.

Roush sells an oil that still has Zinc in it. Off road use only....of course ;)

I was reading that little FAQ about GC...
Ok, so its a 0W30 weight only as its the only sythetic castrol oil that is actually made using Group IV base stock.
Mobil 1 does use Group IV stock. Not sure on Valvoline's sythetic stuff. Im gunna have to break out my valvoline book and see what the base stock is.

5w30 of Autozone oil is has the same weight at cold(first number) and opt temps (last number) as 5w30 Mobil 1 or Amsoil 5w30. Its what the oil is made up of that changes.
Sytheic, weither using PAO base or a moddified Group III base stock, will protect better then regular base stock oil. It operational temperature range is much larger then non-sythetic as well as several other things to help keep the engine better protected.

the old rotella was excellent high zinc and low moly. what i currently use is brad penn, we have had excellent results in all our engines . other than the brad penn u can also use offroad valvoline which has also seemed to work very well. after having mobil 1's new formula destroy a set of big block lifters and a custom high dollar cam, u wont see me using it ever again.

I dont understand why parts makers arent building and prepping for the new low/no zinc oil.

Possibly too expensive to re-tool or redesign flat tappet cams for a new material. I am pretty sure the zinc was in there as an anti-scuff agent because of the dragging of the flat lifters, and with new cars all having roller cams maybe they are trying to phase out flat tappets?

Good question for the cam manufacturers.

since were on the subject of oil....at the last dealer i worked at we used to put Krex Graphite Lubricant into each motor after the oil change. i never thought anything about it...until i started using it....anyone else use this or heard of it? and if so what are your feelings on it?

http://www.krexinc.com/images/graphite_bottle.jpg

We sell Zinc additives at work.

There are far more new vehicles out there that do NOT need the Zinc to clog up thier cats then vehicles that have no cats and still use flat tappets.
This reminds me...I wonder if the poor performance in the 72 is due to the fact that its a flat tappet engine, and Ive been running modern oil through it. Perhaps the cam shaft is a bit smoother then when it came from the factory?
Guess that means yet another heads/cam/intake plan for yet another Camaro.
*ques Benny Hill music*