I put in some serious time reading up on oils for 1.8t, this is what I found and how I'd rank them.
11-03-2002, 09:14 PM
#12
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I'd bust a nut to get it, maybe better than any specialty oil. Some guy, Tim mail-orders many brands
over at theoildrop.com. I looked for this stuff before, did not find it. Maybe this guy Tim is legit, I'll check sometime. I am committed to Synpower 5w-40, 2 cases in the garage. All I would say is stick with a Mercedes-approved lube, can't go wrong.
11-03-2002, 09:57 PM
#13
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Here are a few comments from Mobil 1's SuperSyn site (see link) ...
Mobil 1 with SuperSynTM 0W-40 is formulated for newer European cars, especially those with advanced-technology, multi-valve engines. It can be used where an SAE 0W-40, 0W-30, 5W-30 or 5W-40 grade viscosity is recommended.
Mobil 1 with SuperSynTM 0W-30, 5W-30 and 10W-30 improve fuel economy, exceeding the newest fuel efficiency rating - "Energy Conserving". Their cold-temperature performance is superior to conventional SAE 5W-30, 10W-30 and 10W-40 oils, easing the load on battery-started engines, especially at temperatures below -18°C (0°F). Owners of all cars should follow the car maker's recommendations for oil drain and filter change intervals.
Within the above API Service Classifications, Mobil 1 with SuperSynTM 0W-30, 5W-30 and 10W-30 can be used anywhere an SAE 0W-30, 5W-30, 10W-30, 10W-40, 5W, 10W, 20W, 20 or 30 grade viscosity is recommended.
Also, here's a little clarification I found in a Mobil Q&A site on the relationship between group IV and group V oils:
Q: What percentage of synthetic engine oils is PAO and Group V base stocks (ester and other synthetics)?
A: Fully synthetic engine oils generally contain 70% to 80% PAO, 5% to 10 % Group V base stocks and the remaining portion are additives. However, some engine oil marketers have elected to use higher ratios.
Q: Why are Group V (esters and other synthetics) base stocks formulated in synthetic engine oils?
A: Group V base stocks are formulated in engine oils for improved additive solubility, improved deposit control and seal compatibility.<ul><li><a href="https://dallnd6.dal.mobil.com/GIS/MobilPDS.nsf/26b7c4b33367a4a086256665004e4266/61638dff7d0453b085256b8400618b40?OpenDocument">htt ps://dallnd6.dal.mobil.com/GIS/MobilPDS.nsf/26b7c4b33367a4a086256665004e4266/61638dff7d0453b085256b8400
Mobil 1 with SuperSynTM 0W-30, 5W-30 and 10W-30 improve fuel economy, exceeding the newest fuel efficiency rating - "Energy Conserving". Their cold-temperature performance is superior to conventional SAE 5W-30, 10W-30 and 10W-40 oils, easing the load on battery-started engines, especially at temperatures below -18°C (0°F). Owners of all cars should follow the car maker's recommendations for oil drain and filter change intervals.
Within the above API Service Classifications, Mobil 1 with SuperSynTM 0W-30, 5W-30 and 10W-30 can be used anywhere an SAE 0W-30, 5W-30, 10W-30, 10W-40, 5W, 10W, 20W, 20 or 30 grade viscosity is recommended.
Also, here's a little clarification I found in a Mobil Q&A site on the relationship between group IV and group V oils:
Q: What percentage of synthetic engine oils is PAO and Group V base stocks (ester and other synthetics)?
A: Fully synthetic engine oils generally contain 70% to 80% PAO, 5% to 10 % Group V base stocks and the remaining portion are additives. However, some engine oil marketers have elected to use higher ratios.
Q: Why are Group V (esters and other synthetics) base stocks formulated in synthetic engine oils?
A: Group V base stocks are formulated in engine oils for improved additive solubility, improved deposit control and seal compatibility.<ul><li><a href="https://dallnd6.dal.mobil.com/GIS/MobilPDS.nsf/26b7c4b33367a4a086256665004e4266/61638dff7d0453b085256b8400618b40?OpenDocument">htt ps://dallnd6.dal.mobil.com/GIS/MobilPDS.nsf/26b7c4b33367a4a086256665004e4266/61638dff7d0453b085256b8400
11-03-2002, 10:39 PM
#15
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The oildrop server is good reading but opinions there seem to vary all over the place. ...
Interesting read ... I presume you you based your writeup on a long read of many, many oildrop posts and then based your conclusions on opinions that seemed to hold the most weight. Is this presumption correct?<ul><li><a href="http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=1;t=000673;p=">http ://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=1;t=000673;p=</a</li></ul>
11-03-2002, 11:23 PM
#16
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I had the same question and found this on a Mobil Q&A page ...
Q: What percentage of synthetic engine oils is PAO and Group V base stocks (ester and other synthetics)?
A: Fully synthetic engine oils generally contain 70% to 80% PAO, 5% to 10 % Group V base stocks and the remaining portion are additives. However, some engine oil marketers have elected to use higher ratios.
Q: Why are Group V (esters and other synthetics) base stocks formulated in synthetic engine oils?
A: Group V base stocks are formulated in engine oils for improved additive solubility, improved deposit control and seal compatibility.
A: Fully synthetic engine oils generally contain 70% to 80% PAO, 5% to 10 % Group V base stocks and the remaining portion are additives. However, some engine oil marketers have elected to use higher ratios.
Q: Why are Group V (esters and other synthetics) base stocks formulated in synthetic engine oils?
A: Group V base stocks are formulated in engine oils for improved additive solubility, improved deposit control and seal compatibility.
11-04-2002, 12:12 AM
#18
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Re: I love Kendall, but don't know where to get it any more.
From what I've read, Phillips recently bought Kendall from Tosco, who earleir bought it from Sunoco. This link has a 1-800 number that you can call that might be able to tell you where to buy it.
From what I've concluded, the advantage of Kendall GT-1 over other oils is it's higher zink content (highest of all oils on the lists I found - .16 ). Here's a comment on zink that I found on one oils page:
% zinc is the amount of zinc used as an extreme pressure, anti- wear additive. The zinc is only used when there is actual metal to metal contact in the engine. Hopefully the oil will do its job and this will rarely occur, but if it does, the zinc compounds react with the metal to prevent scuffing and wear. A level of .11% is enough to protect an automobile engine for the extended oil drain interval, under normal use. Those of you with high revving, air cooled motorcycles or turbo charged cars or bikes might want to look at the oils with the higher zinc content. More doesn't give you better protection, it gives you longer protection if the rate of metal to metal contact is abnormally high. High zinc content can lead to deposit formation and plug fouling.<ul><li><a href="http://www.kendallmotoroil.com/techtips/GT1_Reformulation.pdf">http://www.kendallmotoroil.com/techtips/GT1_Reformulation.pdf</a</li></ul>
From what I've concluded, the advantage of Kendall GT-1 over other oils is it's higher zink content (highest of all oils on the lists I found - .16 ). Here's a comment on zink that I found on one oils page:
% zinc is the amount of zinc used as an extreme pressure, anti- wear additive. The zinc is only used when there is actual metal to metal contact in the engine. Hopefully the oil will do its job and this will rarely occur, but if it does, the zinc compounds react with the metal to prevent scuffing and wear. A level of .11% is enough to protect an automobile engine for the extended oil drain interval, under normal use. Those of you with high revving, air cooled motorcycles or turbo charged cars or bikes might want to look at the oils with the higher zinc content. More doesn't give you better protection, it gives you longer protection if the rate of metal to metal contact is abnormally high. High zinc content can lead to deposit formation and plug fouling.<ul><li><a href="http://www.kendallmotoroil.com/techtips/GT1_Reformulation.pdf">http://www.kendallmotoroil.com/techtips/GT1_Reformulation.pdf</a</li></ul>
11-04-2002, 05:02 AM
#19
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Bror Jace and dbrowne1 are the two more knowledgeable people on this board...
They also post on vwvortex, along with "john s", a TT owner who did a lot of comparison testing of Mobil 1 and other synthetic oils. This was around the time when Mobil 1 introduced SuperSyn. There was a long thread with lots of graphs on vwvortex earlier this year (please forgive some of my naive comments there - I was just getting my feet wet... in engine oil I guess):<ul><li><a href="http://forums.vwvortex.com/zerothread?id=313674&page=2">http://forums.vwvortex.com/zerothread?id=313674&page=2</a</li></ul>
11-04-2002, 05:55 AM
#20
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Talk about steeling my thunder
I just put up the link to the Kendall oil Sunday afternoon.
I do disagree w/the Castrol 5-50. IMO that's too thick. It's not like were driving 3L V12's.
For me, I plan to get some Kendall or Valvoline 5-40. In fact, last night I returned my M1 0-30 back to Wal-Mart.
I do disagree w/the Castrol 5-50. IMO that's too thick. It's not like were driving 3L V12's.
For me, I plan to get some Kendall or Valvoline 5-40. In fact, last night I returned my M1 0-30 back to Wal-Mart.