what synthetic oil do you use??
#31
Intermediate
iTrader: (1)
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I tried Mobil 1 5W30 in my GS400 and was not satisfied with my UOA and changed to my favorite standby Schaeffers Supreme 5W30 synthetic blend....it has better additive package and does much better for my style of driving which includes many short trips that don't get my oil to operating temperature.
#33
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Normally for Toyota engines, especially V8s, base oil is important, but not as critical. Base oil is just one factor to make a good oil, additive package is also important.
I ran Amsoil XLM 5w-20 (Group III) in my Acura's J-series engine since it is more forgiving than the sludge prone 1mz-fe
Group III is technically not a synthetic because the base oil is derived from mineral petrolum crude oil. If you google Castrol vs. Mobil you will find out why Group III is called a synthetic now, it is a marketing ploy and way to make $.
Ironically, Mobil now is using the same approach as Castrol - using cheaper base stock and call it synthetic - quietly. This is after Mobil hyped its Mobil 1 as 100% Group IV, therefore, superior products over other brands.
I am a M1 users for many years, but I wish Mobil could be more honest about using a cheaper base stock. Silly me, why ask for the impossible? An oil company being honest?
But Pennzoil went with Group III around late 2005, they did not hide it, Amsoil uses Group III in its XL oils but does not hide it. Castrol 0w-30, made in Germany, is the only Group IV oil in Castrol's lineup in the U.S. I just picked up 6 quarts at Autozone.
Definitions of base oil groups:
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.
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.
Last edited by TunedRX300; 01-16-07 at 05:36 PM.
#35
Lexus Fanatic
Join Date: Dec 2005
Location: Los Angeles/Vancouver
Posts: 6,231
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
ah i see
thanks for the education
so what are oil are good?
also what oil filters should i should with synthetic to stretch the intervals to say 7K miles
thanks for the education
so what are oil are good?
also what oil filters should i should with synthetic to stretch the intervals to say 7K miles
#36
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Since your car will have to spent long cold winters in Canada, use 0w-30, 0w-20, or 5w-20 synthetic oil. Mobil 1 is pretty good oil if you can get a discount, especially if you still can get older Group IV M1.
Again, UOA is the only sure way to tell which oil is good for you. You can also send a sample and enclose $20 to a lab.
#38
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
since all the off the shelf stuff is SyntheticOil Lite (tm) I just get whatever is on sale from a well known brand. I used to pay more for Mobil 1, but thats just wasting money since the formula change.
Currenly running the Pennzoil Synthetic that is on sale all month at Kragen / Chuckers for .99 a quart (after rebate).
Currenly running the Pennzoil Synthetic that is on sale all month at Kragen / Chuckers for .99 a quart (after rebate).
#39
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
since all the off the shelf stuff is SyntheticOil Lite (tm) I just get whatever is on sale from a well known brand. I used to pay more for Mobil 1, but thats just wasting money since the formula change.
Currenly running the Pennzoil Synthetic that is on sale all month at Kragen / Chuckers for .99 a quart (after rebate).
Currenly running the Pennzoil Synthetic that is on sale all month at Kragen / Chuckers for .99 a quart (after rebate).
German Castrol 0w-30 is probably the only known OTC Group IV PAO based true synthetic, but not all Autozone stores carry it. I have not used it yet but heard good reviews from owners.
From BITOG.
http://theoildrop.server101.com/foru...0&fpart=1&vc=1
There seems to be a lot of interest here about the base oil composition of the German Castrol 0W-30 oil, so I picked up a quart (Gold – M05216) at the local AZ and ran a G.C (Gas Chromatograph) and FTIR to take a peek at the components.
This oil is based entirely on 1-decene type PAOs. Judging from the ratios of the C30, C40, and C50 groupings it appears to be a blend of mostly 4 cSt PAO with either 6 cSt or 8 cSt cuts.
There is no mineral base oil present (Group I, II, or III) other than a small amount consistent with additive carrier oil.
No esters or ANs are present on the G.C. and transesterification does not remove any peaks (which it would if esters were present). The FTIR also shows no significant C=0 absorbance from esters. If there is any ester in this oil it is either very tiny or very high molecular weight, neither of which makes technical sense.
This oil is based entirely on 1-decene type PAOs. Judging from the ratios of the C30, C40, and C50 groupings it appears to be a blend of mostly 4 cSt PAO with either 6 cSt or 8 cSt cuts.
There is no mineral base oil present (Group I, II, or III) other than a small amount consistent with additive carrier oil.
No esters or ANs are present on the G.C. and transesterification does not remove any peaks (which it would if esters were present). The FTIR also shows no significant C=0 absorbance from esters. If there is any ester in this oil it is either very tiny or very high molecular weight, neither of which makes technical sense.
Last edited by TunedRX300; 01-16-07 at 05:34 PM.
Thread
Thread Starter
Forum
Replies
Last Post
T-Rex06
IS - 2nd Gen (2006-2013)
34
04-27-06 11:39 PM