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23:50:13 - 12/19/2024
V6 Dakotas
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OilXpert
Dodge Dakota
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3/02/2008
13:55:24
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 Subject: CASTROL SYNTEC = FAKE SYNTHETIC
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Message:
CASTROL SYNTEC is NOT a synthetic oil.
It is a Group III hydrocracked oil with
some Group IV synthetic blended in.
Not all synthetic oils are the same.
Castrol Syntec is a Group III (fake) synthetic, not a Group IV.
AMSOIL is a Group IV True PAO 100% synthetic oil.
There are many oils out there that call themselves synthetic, but not all are created equal, and that's important to know. You do get what you pay for. Group III synthetic oils only use about 12% synthetic base stocks. The rest is hyrdocracked petroleum (crude oil) base stocks. For major oil companies who have their money in crude oil refining, the word "synthetic" is merely a marketing term. It does not mean 100%, but just that a percentage of synthetic base stock goes into their product.
The oils that are commonly mentioned are Group II and Group III synthetics with the exception of Royal Purple, which is a Group V. AMSOIL is a Group IV synthetic (PAO) but also uses Group V Ester technology. It (Amsoil) gives you the best of Group IV and Group V synthetics.
REMEMBER:
Castrol Syntec is a Group III (fake) synthetic.
AMSOIL is a Group IV True PAO synthetic.
BACKGROUND
In the late 1990s, Castrol started selling an oil made from Group III base oil and called it SynTec Full Synthetic. Mobil sued Castrol, asserting that this oil was not synthetic, but simply a highly refined petroleum oil, and therefore it was false advertising to call it synthetic. In 1999, Mobil lost their lawsuit. It was decided that the word "synthetic" was a marketing term and referred to properties, not to production methods or ingredients. Castrol continues to make SynTec out of Group III base oils, that is highly purified mineral oil with most all of the cockroach bits removed.
Shortly after Mobil lost their lawsuit, most oil companies started reformulating their synthetic oils to use Group III base stocks instead of PAOs or diester stocks as their primary component. Most of the "synthetic oil" you can buy today is actually mostly made of this highly-distilled and purified dino-juice called Group III oil. Group III base oils cost about half as much as the synthetics. By using a blend of mostly Group III oils and a smaller amount of "true" synthetics, the oil companies can produce a product that has some of the same properties as the "true" synthetics, and nearly the same cost as the Group III oil. AMSOIL differs from Group III oils. As a Group IV oil, it uses 100% pure synthetic base stocks. This is why you can run it for longer intervals.
Synthetic oils were originally designed for the purpose of having a very pure base oil with excellent properties. By starting from scratch and building up your oil molecules from little pieces, you can pretty much guarantee that every molecule in the oil is just like every other molecule, and therefore the properties are exactly what you designed in, not compromised by impurities. Synthetics were thus originally a reaction to the relatively poor refining processes available from about 1930 to about 1990. The original synthetics were designed for the Army Air Force in WW II. They simply could not make their high- performance turbo-charged radial engines stay alive on the available motor oils of the time.
One process for making synthetic base oils is to start with a chemical called an olefin, and make new molecules by attaching them to each other in long chains, hence "poly." The primary advantage of Poly-Alpha-Olefin "PAO" base oil is that all the molecules in the base oil are pretty much identical, so it's easy to get the base oil to behave exactly as you like. PAOs are called Group IV base oils.
Remember:
AMSOIL is a Group IV True PAO 100% synthetic oil.
These PAO base oils have an enormous advantage over mineral base oils in low temperature performance and in resistance to oxidation, which is critical in keeping the oil from forming acids.
Another type of base oil is made from refined and processed esters and is called Group V. Esters start life as fatty acids in plants and animals, which are then chemically combined into esters, diesters, and polyesters. Group V base stocks are the most expensive of all to produce. However, the esters are polar molecules and have very significant solvent properties - an ester base oil all by itself will do a very decent job of keeping your engine clean. So, people who are serious about making a superior oil will usually mix some Group V oils into their base stock.
Oils that are strictly Group V ester oils tend to be better suited for high RPM, hot running, air cooled engines. 100% ester based oils are usually more expensive than Group IV oils, and don't have the longevity of PAO (Group IV) or PAO/Ester mixes oils. Group V oils perform very well in the shorter term. Oils like Royal Purple and Redline are Group V oils. They perform very well in race engines and in applications where drain intervals are factory spec or shorter, whereas Group IV oils are better suited for the long haul of extended intervals.
Whatever oil you choose, know what you are buying. Just because the jug says "synthetic" doesn't mean it is made from 100% pure synthetic base stocks.
REMEMBER:
Castrol Syntec is a Group III (fake) synthetic.
AMSOIL is a Group IV True PAO synthetic.
#########################
I like these quotes:
This quote sux (for Castrol Syntec):
Castrol Syntec is a Group III synthetic, not a Group IV.
Group III synthetic oils only use about 12%
synthetic base stocks. The rest is hyrdocracked
petroleum base stocks.
This quote sux (for Royal Purple):
Group V oils perform very well in the shorter term. Oils like Royal Purple and Redline are Group V oils. They perform very well in race engines and in applications where drain intervals are factory spec or shorter
and this one:
Oils that are strictly Group V ester oils tend to be better suited for high RPM, hot running, air cooled engines. 100% ester based oils are usually more expensive than Group IV oils, and don't have the longevity of PAO (Group IV) or PAO/Ester mixes oils
This quote is great (for Amsoil):
AMSOIL is a Group IV synthetic (PAO)
but also uses Group V Ester technology.
It (AMSOIL) gives you the best of
Group IV and Group V synthetics.
Recap of the above article:
Castrol Syntec and Mobil are Group III.
Castrol Syntec and Mobil are not Group IV.
Castrol Syntec and Mobil are made from
hyrdocracked petroleum (crude) base stocks.
Castrol Syntec was never a synthetic oil
except for mkting purposes.
--- CASTROL SYNTEC LIES ABOUT BEING A SYNTHETIC ---
--- MOBIL1 LIES ABOUT BEING A SYNTHETIC ---
Royal Purple is Group V.
Group V oils perform very well in the shorter term.
They perform very well in race engines.
They perform very well in applications where
drain intervals are factory specifications or shorter.
Royal Purple tends to be better suited for high
RPM, hot running, air cooled engines.
RP oils don't have the longevity of PAO (Group IV) or PAO/Ester mixes oils.
-- RP is ONLY FOR VERY SHORT DRAIN INTERVALS --
Amsoil is a PAO (Group IV) or PAO/Ester mix
It (AMSOIL) gives you the best of Group IV and Group V synthetics.
Amsoil is a true 100% PAO Group IV Synthetic Oil.
--- AMSOIL IS A TRUE PAO SYNTHETIC AND THE BEST ---
--- AMSOIL IS BEST SUITED FOR EXTENDED OIL DRAINS ---
#########################
AMSOIL NOW SPOTTED AT DODGE DEALERSHIPS!
WHAT MORE DO YOU NEED THAN DODGE's APPROVAL?
Amsoil is Approved for Dakotas and other Dodge vehicles:
DODGE DEALERSHIPS NOW CARRY AMSOIL
here is the thread on this forum:
http://www.dodgedakota.net/boards/gen/16998.html
USE AMSOIL WITH CONFIDENCE!
#########################
Don't pay retail at your Dodge Dealership.
Contact Steve for better prices.
The Amsoil guy (Steve the Amsoil site sponsor)
that was a site sponsor here for many years
(from 2002 - 2007) left due to the childish
behavior of a few flamers.
Steve can be found on another Dodge Dakota truck
site that has moderators and does not allow
undue flaming and childish behavior:
http://www.dakota-durango.com/forum/forumdisplay.php?f=105
DEFEAT THE FLAMERS BY BUYING AMSOIL !!!
DEFEAT THE FLAMERS BY BUYING AMSOIL !!!
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