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Thread: Stupid Question - What Motor Oil are you using? And where do you get it?

  1. #19
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    Replied to wrong thread.....duh. sorry

    Quote Originally Posted by boca rat View Post
    Thx to all for responding. Need to get this ordered as getting the oil change done while away next week. So Pentosin not recommended? Planning on reaching out to BND for next time

    Thx again!
    2003 Avus RS6 01E, nubcake, Hotchkis
    2003 Daytona RS6 01E, nubcake, Hotchkis, rear ended at 50mph, totaled, RIP
    1991 Acura NSX, supercharged, 425rwhp, recently sold

  2. #20
    Registered User G2's Avatar
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    Pentosin is about the same as other OEM European made oils. Good, but leaves a lot on the table due to OE spec limitations. Pentosin is factory fill in most power steering systems - RS6 included.

    If Amsoil is of interest there's free shipping at www.oilpro.myamsoil.com First choice in my car is their 5/50 Signature Series (AMR), or 5/40 European (EFM). Also for the A4 2.0T, now with almost 190,000 miles.

    Excellent oil filters as well. You're ears will notice the difference...
    Cheers, G2/Gary
    C5-RS6/KWV3/Revo/H20 Inj./Custom BBK/Custom cooling/CNC arms \ VW Touareg V10 \ B7A4 2.0T Avant \ Mk1 Callaway Scirocco \ audirs6parts@gmail.com / www.oilpro.myamsoil.com

  3. #21
    Registered User G2's Avatar
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    Quote Originally Posted by fukinavit View Post
    im on the Redline euro 5w40 train, local to me and reasonable price with specs hard to beat.

    i used to run BND for a while but way too expensive and not a year round oil (especially up here) that stuff is gross in the winter.
    Gross, as in thick, or?

    Was on the Redline bandwagon for about 10 years prior to the 20 year run with Amsoil so far. Admittedly it was out of desperation being in Wisconsin where it's made. It immediately proved itself in sub zero temps. Based on gleaning tech specs and white paper report, was impressed with their consistent performance across the board compared to other key players- engine, trans/ATF and gear oils. Best oil filter for the RS6 I've found so far as well. Completes the package of protection as it were.

  4. #22
    Registered User hahnmgh63's Avatar
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    Redline is made in California of all places. Redline is also a Group IV oil which most synthetics are Group II or III. I also challenge you to check the websites of all the oil manufacturers to find a higher HTHS oil which is one of the first restrictions on VAG 505.01 which most other oils only meet the minimum and Redline's HTHS exceeds by a margin.
    2003 White RS6 2013 Midnight Blue S5
    2013 Daytona RS5 2x944 Turbo's 1974 911 w/'91 3.6ltr motor
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  5. #23
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    Can one of you add to your comments about "best oil filter"? In what way and how do you know?

    Thx!
    2003 Avus RS6 01E, nubcake, Hotchkis
    2003 Daytona RS6 01E, nubcake, Hotchkis, rear ended at 50mph, totaled, RIP
    1991 Acura NSX, supercharged, 425rwhp, recently sold

  6. #24
    Registered User G2's Avatar
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    Quote Originally Posted by boca rat View Post
    Can one of you add to your comments about "best oil filter"? In what way and how do you know?

    Thx!
    The word "excellent" was certainly used.

    I like Amsoil filters because they reduce the time required to build oil pressure into the heads. This helps reduce top end noise on startup. I further like the filters because they are synthetic media which filters far better than paper media types. The micron rating is lower and the percentage of debris caught is nearly 100%. They also last longer with more consistent performance.

    After doing countless oil services on all sorts of European cars, it always makes me cringe to see a paper element become hard, brittle, usually caving in from the excessive resistance. At a certain point the oil filter can cause the over pressure valve to open. This allows unfiltered oil back into the engine.

    Having changed a lot of oil on RS6's (besides just mine), simply using an Amsoil filter always helps to reduce startup noises. Of course I'm using Amsoil engine oil. Not many companies are quite so OCD to make their own filters and oil. Pretty cool in my book.
    Cheers, G2/Gary
    C5-RS6/KWV3/Revo/H20 Inj./Custom BBK/Custom cooling/CNC arms \ VW Touareg V10 \ B7A4 2.0T Avant \ Mk1 Callaway Scirocco \ audirs6parts@gmail.com / www.oilpro.myamsoil.com

  7. #25
    Registered User G2's Avatar
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    Interesting read: https://blog.amsoil.com/how-much-syn...-is-in-my-oil/

    I lived about an hour from where Redline is made. Every private or amateur racecar at Sears Point Raceway ran it. Could almost run a oil line to the track. I joined in.

    HTHS is crucial but not the only metric for choosing an oil. There's about 10 performance benchmark tests. Some are mandated, some elective in testing.

    For fun looked at Redline and Amsoil the other day for their respective OE 505.01 spec 5/40 European lubes. Near identical to the untrained eye. Oddly Redline has a much higher (11%) NOACK burnoff. It also has slightly less viscosity at the 40wt rating in Kinematic terms which is far more accurate. I recall HTHS being the same/close at 3.8, including VI @ 168 (extremely high). TBN is limited to about 8. This is just slightly above 7pH being neutral. If splitting hairs Amsoil has the advantage.

    I'm not sure Redline exceeds the HTHS by any significant margin, other than a margin.

    Far as the 505.01 spec goes I avoid it due to reduced SAPS PPM's and reduced TBN. TBN really plays into the final acidity levels. I've seen UOA's where TBN was flagged. Most OE specs oils become so acidic it attacks engine seals. Helps cause oil leaks. It can even eat away at engine bearings. No fun. I prefer "unregulated" oils allowing higher TBN levels. Even Amsoil mid grade 5/40 Euro is at 10. The 5/50 is pushing 13. I challenge anyone to find it any higher- if we're doing the challenge thing.

    We tend to get so wound up on operational/running specs it's easy to forget most engine wear occurs during startup. High SAPS/Zinc PPM's are crucial no matter the oil Group type. End of the day protecting the engine is first priority in my book.
    Cheers, G2/Gary
    C5-RS6/KWV3/Revo/H20 Inj./Custom BBK/Custom cooling/CNC arms \ VW Touareg V10 \ B7A4 2.0T Avant \ Mk1 Callaway Scirocco \ audirs6parts@gmail.com / www.oilpro.myamsoil.com

  8. #26
    Registered User G2's Avatar
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    Quote Originally Posted by hahnmgh63 View Post
    Redline is made in California of all places. Redline is also a Group IV oil which most synthetics are Group II or III. I also challenge you to check the websites of all the oil manufacturers to find a higher HTHS oil which is one of the first restrictions on VAG 505.01 which most other oils only meet the minimum and Redline's HTHS exceeds by a margin.
    https://www.amsoil.com/lit/databulletins/g2880.pdf

    Have a look at the 5/50. That'll wet anyone's whistle for off the chart specs.

    The V10 gets it next - 14 qts worth.

  9. #27
    Registered User hahnmgh63's Avatar
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    I'll throw this out from Redlines data sheets, as you can see I am a big Redline fan. They have two 5w-40 oils, the regular and what they call the Euro series. Pretty close specs but probably slightly different due to manufacturer certifications, both meet VAG 505.01 though, and the NOACK on both lists at 6%. The regular has a HTHS of 4.4 and the Euro is listed at 4.3. Once again not sure of the formulation differences but I have been using the regular for 20yrs and don't see the need to go to the Euro series.
    2003 White RS6 2013 Midnight Blue S5
    2013 Daytona RS5 2x944 Turbo's 1974 911 w/'91 3.6ltr motor
    Roy, WA

  10. #28
    Registered User Cmnair's Avatar
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    Quote Originally Posted by fukinavit View Post
    i used to run BND for a while but way too expensive and not a year round oil (especially up here) that stuff is gross in the winter.
    Been running BND in my car here in NY and have had no issues. Not sure what you mean by "gross". Perhaps reach out to Brian?
    2003 Audi RS6 Daytona/Silver, 2012 Porsche 911 Turbo S, 2016 Golf R 6 MT, 2018 Porsche Macan GTS

  11. #29
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    Quote Originally Posted by Cmnair View Post
    Been running BND in my car here in NY and have had no issues. Not sure what you mean by "gross". Perhaps reach out to Brian?
    Basically if you run your car below zero (c) use something else.
    I got caught when winter came early, my car was sat at work for a few days when I returned to pick it up. Was about - 5c and engine clattered away and oil pressure light remained on for about 10 seconds.
    I did an oil change in my garage a few days later and the oil drained like tar, all congealed and separated. My garage heater had quit so again it was around zero when I did this.

    For an advertised 8w oil it's way too thick for me. Probably okay for warmer climates but certainly not year round use for me.

    I went to redline 5w40 and she likes it alot better, alot cheaper, good start up and no noises = win win
    Last edited by fukinavit; May 16th, 2019 at 18:47.
    2010 XC90 exec, winter machine (V8 of course)
    2004 RS6 official Canadian edition, Daytona grey, (best colour!), summer edition
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  12. #30
    Registered User Cmnair's Avatar
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    Hmmm interesting ....never had a single issue in the winter in NY
    2003 Audi RS6 Daytona/Silver, 2012 Porsche 911 Turbo S, 2016 Golf R 6 MT, 2018 Porsche Macan GTS

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