Any experience with Castrol Synthetic ??
12-30-07 | 12:05 PM
#2
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Joined: Apr 2001
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From: Austin, TX
Castrol has syntec (sp?) which they sell as synthetic (there is a blend as well). I have consistently used the syntec for the Lexus line. No issues, no problems but I change the oil ar 3.5k miles interval. The good thing is that it is available at mostly all stores (Walmart as well).
The other discussion that is on going talks about another "synthetic" castrol which meets BMW specifications [not syntec]. This is hard to locate.
The classification of 'synthetic' is different across the moat.
If my understanding is wrong. please correct me.
Salim
The other discussion that is on going talks about another "synthetic" castrol which meets BMW specifications [not syntec]. This is hard to locate.
The classification of 'synthetic' is different across the moat.
If my understanding is wrong. please correct me.
Salim
12-30-07 | 12:21 PM
#3
Lexus Test Driver
Joined: May 2005
Posts: 1,405
Likes: 3
From: International
There are better oils out there in that price range. Pennzoil Platinum, for one, may even be the best. It is, however, a group III oil, which is not synthetic by the definition of many, including myself. It's still a superb oil.
12-30-07 | 03:56 PM
#5
Lexus Champion
Joined: Jan 2005
Posts: 2,447
Likes: 8
From: CA
Wikipedia has this defination about synthetic oil
If you believe that definition, Group II, Group III oils are not true synthetic oils.
Here are classification of base oil, which makes up about 85% of passenger car motor oil. GC is PAO based, Redline oils are ester or group V based oils.
Group I Solvent Freezing Group I base oils are the least refined of all of the groups. They are usually a mix of different hydrocarbon chains with little or no uniformity. While some automotive oils on the market use Group I stocks, they are generally used in less demanding applications.
Group II Hydroprocessing and Refining Group II base oils are common in mineral-based motor oils currently available on the market. They have fair to good performance in lubricating properties such as volatility, oxidative stability and flash/fire points. They have only fair performance in areas such as pour point, cold crank viscosity and extreme pressure wear.
Group III Hydroprocessing and Refining Group III base oils are subjected to the highest level of mineral oil refining of the base oil groups. Although they are not chemically engineered, they offer good performance in a wide range of attributes as well as good molecular uniformity and stability. They are commonly mixed with additives and marketed as synthetic or semi-synthetic products. Group III base oil products have become more common in America during the past decade.
Group IV Chemical Reactions Group IV base oils are chemically engineered synthetic base stocks. Polyalphaolefins (PAOs) are a common example of a synthetic base stock. Synthetics, when combined with additives, offer excellent performance over a wide range of lubricating properties. They have very stable chemical compositions and highly uniform molecular chains. Group IV base oils are becoming more common in synthetic and synthetic-blend products for automotive and industrial applications.
Group V As Indicated Group V base oils are used primarily in the creation of oil additives. Esters and polyolesters are both common Group V base oils used in the formulation of oil additives. Group V oils exhibit a wide variety of properties specific to each individual oil's formulation. Group V base oils are generally not used as base oils themselves, but add beneficial properties to other base oils.
Synthetic oil is oil consisting of chemical compounds which were not originally present in crude oil (petroleum) but were artificially made (synthesized) from other compounds.
Here are classification of base oil, which makes up about 85% of passenger car motor oil. GC is PAO based, Redline oils are ester or group V based oils.
Group I Solvent Freezing Group I base oils are the least refined of all of the groups. They are usually a mix of different hydrocarbon chains with little or no uniformity. While some automotive oils on the market use Group I stocks, they are generally used in less demanding applications.
Group II Hydroprocessing and Refining Group II base oils are common in mineral-based motor oils currently available on the market. They have fair to good performance in lubricating properties such as volatility, oxidative stability and flash/fire points. They have only fair performance in areas such as pour point, cold crank viscosity and extreme pressure wear.
Group III Hydroprocessing and Refining Group III base oils are subjected to the highest level of mineral oil refining of the base oil groups. Although they are not chemically engineered, they offer good performance in a wide range of attributes as well as good molecular uniformity and stability. They are commonly mixed with additives and marketed as synthetic or semi-synthetic products. Group III base oil products have become more common in America during the past decade.
Group IV Chemical Reactions Group IV base oils are chemically engineered synthetic base stocks. Polyalphaolefins (PAOs) are a common example of a synthetic base stock. Synthetics, when combined with additives, offer excellent performance over a wide range of lubricating properties. They have very stable chemical compositions and highly uniform molecular chains. Group IV base oils are becoming more common in synthetic and synthetic-blend products for automotive and industrial applications.
Group V As Indicated Group V base oils are used primarily in the creation of oil additives. Esters and polyolesters are both common Group V base oils used in the formulation of oil additives. Group V oils exhibit a wide variety of properties specific to each individual oil's formulation. Group V base oils are generally not used as base oils themselves, but add beneficial properties to other base oils.
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