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  1. #1
    Active Member Two Rings
    Join Date
    Apr 23 2017
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    398293
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    PA

    Run RS5 spec oil in S4?

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    Has anyone considered or is running 5w40 502 spec oil in their S4? To the best of my knowledge the reason Audi went with 0w20 in the S4 is to meet MPG standards as it provides slightly better fuel economy. Personally I'd prefer a cooler running engine over the increased fuel economy. I'm currently looking for the internal Audi service training guide RS5 (sorry don't know engine code) similar to the S4/S5 EA389 one posted below to see the differences. If the oil pump, oil sensors and oil restrictors are the same is there any reason why we couldn't run 502 spec oil?

    https://drive.google.com/file/d/1Gru...iiT1IXD7M/view



  2. #2
    Established Member Two Rings Mr. Three's Avatar
    Join Date
    Nov 27 2012
    AZ Member #
    104855
    Location
    Aptos, California

    I would be interested in this answer as well...given that we are seeing this as a possible problem on our motors.
    2018 Audi S4 Premium Plus / Nav / Black Optic / S Sport / Fine Nappa / Carbon / EMD Springs / EMD Rear Bar / ECS 10 / 12.5 mm spacers / ECS Transmission Mount
    Cars of the past: 83 A1 GTI / 83 Callaway stage 2 A1 GTI / 86 951 turbo Porsche / 98 Dinan M3 / 95 3.2 OBD1 M3 / 02 E39 M5 / 88 E28 528i / 08 RS4 / 13 S5 / 14 S5 / 15 S5 GIAC Stage 2 / 16 APR tuned S6 / 01 996 911 Turbo ByDesign Stage 4

  3. #3
    Senior Member Two Rings JD23's Avatar
    Join Date
    Jun 12 2016
    AZ Member #
    374585
    Location
    Dallas

    The Castrol Edge 5W-40 is the same 502 oil that's been recommend for the 2.0T for years.

  4. #4
    Veteran Member Four Rings
    Join Date
    Apr 05 2012
    AZ Member #
    91253
    Location
    Earth

    Quote Originally Posted by OverBoosted View Post
    Has anyone considered or is running 5w40 502 spec oil in their S4? To the best of my knowledge the reason Audi went with 0w20 in the S4 is to meet MPG standards as it provides slightly better fuel economy. Personally I'd prefer a cooler running engine over the increased fuel economy. I'm currently looking for the internal Audi service training guide RS5 (sorry don't know engine code) similar to the S4/S5 EA389 one posted below to see the differences. If the oil pump, oil sensors and oil restrictors are the same is there any reason why we couldn't run 502 spec oil?
    The RS 4/RS 5 engine is the EA389. The S4/S5 engine is the EA383.

  5. #5
    Established Member Two Rings
    Join Date
    Dec 01 2017
    AZ Member #
    410581
    Location
    Dallas

    Quote Originally Posted by JohnEnglish View Post
    The RS 4/RS 5 engine is the EA389. The S4/S5 engine is the EA383.
    I have the S4/S5 as the EA839? Does the RS4/RS5 run the miller cycle like the S4/S5 do? I wonder if the miller cycle has anything to do with the 0w20 choice? I would love to run a the 502 spec as its available everywhere and is substantial cheaper then the 508 spec.

    https://drive.google.com/file/d/1Gru...iiT1IXD7M/view

  6. #6
    Veteran Member Four Rings will13k7's Avatar
    Join Date
    Apr 11 2012
    AZ Member #
    91685
    Location
    Bay Area, CA

    Is there more to it than just fuel economy for the 508/509 spec or is this just marketing BS?

    "The new LongLife oil is intended for use in engines requiring the VW 508 00/ 509 00 Specification. These are a new breed of engine, built to use latest technology oils like Castrol EDGE Professional LL IV FE 0W-20 to maximise their performance."

    https://www.prnewswire.com/news-rele...300277766.html

    "Specific latest generation of VW and AUDI engines, high performance Gasoline and Diesel, require a
    very dedicated lubricant because they provide way more efforts and run at increased temperatures,
    while providing the same performance levels as the previous engine generations they replace"

    https://s3-eu-west-1.amazonaws.com/m...pdf?1492182230

  7. #7
    Senior Member Two Rings
    Join Date
    Nov 15 2010
    AZ Member #
    67029
    My Garage
    Audi RS4 2.9 TFSI
    Location
    Oslo

    Quote Originally Posted by OverBoosted View Post
    Has anyone considered or is running 5w40 502 spec oil in their S4? To the best of my knowledge the reason Audi went with 0w20 in the S4 is to meet MPG standards as it provides slightly better fuel economy. Personally I'd prefer a cooler running engine over the increased fuel economy. I'm currently looking for the internal Audi service training guide RS5 (sorry don't know engine code) similar to the S4/S5 EA389 one posted below to see the differences. If the oil pump, oil sensors and oil restrictors are the same is there any reason why we couldn't run 502 spec oil?

    https://drive.google.com/file/d/1Gru...iiT1IXD7M/view


    Do you have similar doc for RS5 ? Would love to see it.
    MY18 B9 Audi RS4 Avant / MY14 Fiesta ST



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