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<blockquote>quote:<hr />Originally posted by moribundman: <strong> I'm latching onto the HT/HS, because that seems to be one of the more important points regarding an oil, at least if you work an engine hard. If I seem obesessed (and obnoxious), rest assured, it's just to beat some more...

<blockquote>quote:<hr />Originally posted by Cary: <strong> <blockquote>quote:<hr />Originally posted by Patman: <strong> No matter how you slice it, a 3.6 HTHS for a 40wt synthetic oil is pretty sad. Pennzoil's conventional 10w40 has a better HTHS! Amsoil's 10w40 is much better too, 3.93. It's...

<blockquote>quote:<hr />Originally posted by moribundman: <strong>Doesn't sound good to me. Why do I even pick an oil that meets the required HT/HS of 3.5 (in my case), if the HT/HS isn't stable? </strong><hr /></blockquote>moribundman, I don't understand why you are latching onto HTHS. I'm...

<blockquote>quote:<hr />Originally posted by moribundman: <strong> And how does HT/HS change with age of the oil? </strong><hr /></blockquote>I don't know. My best guess is that HTHS viscosity would change with age like any other viscosity measurement, i.e., "stay-in-grade" or thin or thicken...

<blockquote>quote:<hr />Originally posted by moribundman: <strong> If the listed HT/HS refers to new oil, then how do we know an oil won't shear below what's required to meet the car maker's requirements? Seems scary, no? </strong><hr /></blockquote>A viscometer is used to measure viscosity at...

<blockquote>quote:<hr />Originally posted by moribundman: <strong> <blockquote>quote:<hr /> One thing to also remember, as the oil thins out, it's HTHS gets even lower. So if 0w40 has an HTHS of 3.6 when new, at 14.4cst, just imagine what it'll be once it has thinned out to 12cst. <hr...

<blockquote>quote:<hr />Originally posted by 4DR Turbo: <strong> see i read a post like this and question my current oil choice Mobil1 0W40 ss for my 2001 VW Golf 1.8T? i've done a fair amount of research on "what oil grade to use" and have decided on the 0w40ss, should i be using something...

<blockquote>quote:<hr />Originally posted by moribundman: <strong> They do use low HT/HS in the newer 1.8T in Europe? I stand corrected. Does this mean the US version of that motor is not the same as the current version for the European market? PS: There's somewhere in one of the posts of the...

<blockquote>quote:<hr />Originally posted by Yuk: <strong> I've been able to find a supply of factory, 06A 115 561B, oil filters for only $8.60 CDN /filter,so I don't know that doing extended drains would save me much money. However, now that I have a supply of VW 503.01 oil I sure am tempted by...

<blockquote>quote:<hr />Originally posted by Patman: <strong> No matter how you slice it, a 3.6 HTHS for a 40wt synthetic oil is pretty sad. Pennzoil's conventional 10w40 has a better HTHS! Amsoil's 10w40 is much better too, 3.93. It's too bad they don't make a 5w40 or 0w40 though (or did...

<blockquote>quote:<hr />Originally posted by Yuk: <strong> For the record I have spoken to two VW dealers, the national PR manager (an old family friend!) and the national service manager (he didn't know what was meant by LANGZEITFILTER 30,000 km / 2 JARHE on the oil fiter!!!). </strong><hr...

<blockquote>quote:<hr />Originally posted by moribundman: <strong> geo, You're right about the HT/HS of 3.5min for both, VW502 and VW500. I checked the picture clipping I have, and the VW502 spec reads like 3.6, but it's clearly 3.5 in the actual PDF file. When the link to that PDF file was...

<blockquote>quote:<hr />Originally posted by Yuk: <strong> OK.... Allow me to dumb this down a notch.... for my benefit not yours. Lets say you're me (poor saps) and you have three choices for your 1999 Passat 1.8T: 1. Mobil 1 0w40 @ $10.00/litre, VW 502/505 and 503.01 2. German Castrol...

<blockquote>quote:<hr />Originally posted by moribundman: <strong> geo, I found the source that gave a different HTHS for VW502.00 and VW500.00: <a href="http://www.ethyl.com/products/la/handbook/Crankcase.pdf" target="_blank">http://www.ethyl.com/products/la/handbook/Crankcase.pdf</a>...

<blockquote>quote:<hr />Originally posted by moribundman: <strong> As I understand it, Audi (and VW) switched in '98 to "Longlife Service" in Europe. That means, they went from VW502.00 spec oil to VW503.01. Pretty much the only difference between VW502.00 and VW503.01 oil are some additive that...

<blockquote>quote:<hr />Originally posted by Pablo: <strong> Per Geo: <blockquote>quote:<hr /> SL Phos max limit does not pertain to 15W-40, only to xW-20/30 oils <hr /></blockquote>Wow, ok I didn't know that. Thanks! So if a xW-40 or xW-50 has SL marked, only the performance portions apply...

<blockquote>quote:<hr />Originally posted by Pablo: <strong> Maybe Fe high for such low miles (??) I don't get the P number. Is this an SL oil? <img border="0" alt="[No no]" title="" src="/forums/graemlins/nono.gif" /> </strong><hr /></blockquote>SL Phos max limit does not pertain to...

<blockquote>quote:<hr />Originally posted by Ken2: <strong> Mobil Delvac 1 carries the API Service Classification SL, so it's suitable for gasoline engines. <a href="http://www.mobil.com/USA-English/Lubes/PDS/GLXXE2CVLMOMobilDelvac1_5W-40.asp"...

<blockquote>quote:<hr />Originally posted by moribundman: <strong> Somehow I doubt that. Most people get their cars serviced at the dealer there, and at least the dealer should know what oil to use. </strong><hr /></blockquote>I wish I could say that about US Audi dealers. <img border="0"...

<blockquote>quote:<hr />Originally posted by Yuk: <strong> Geo, Does this seal change mean my 1999 (built in 1998) 1.8T would be unable to use extended drains? Does this also mean an earlier spec oil ( pre 503.01) would be a better choice in my engine? </strong><hr /></blockquote>Yuk...