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  1. #1
    Join Date
    Jan 2018
    Location
    Grand Rapids, MI
    Posts
    64

    Default Synthetic Oil and Oil leaks

    Been meaning to ask this question.

    For those who have this engine, has anyone switched to full or blend synthetic between say 75000 - 150000 miles? If so, did it create any oil leak?

    Am only asking because I have read some opinions that synthetic may be better for the turbo engine as far as keeping the turbo and PCV clean. My X70 has 117k. Back in the days with some of my cars, I have switched to synthetic at high mileage and every time I did I get oil leaks. And I believe its because synthetic oil cleans the carbon residue and deposits inside the engine thus increasing the tolerance from moving parts and making oil pass thru.

    I'm guessing that it will be the same with this engine.
    IF IT AIN'T BROKE - DON'T FIX IT!
    04 Volvo XC70 5LT 120k "Floatey" Ruby Red, Valvoline 0W40
    07 Honda Accord V6 115k Silver, Napa 5W20 Blend
    07 Honda Accord L4 110k Bronze, Napa 5W20 Blend
    96 MB C220 L4 330k, 20W40

  2. #2
    Join Date
    Mar 2008
    Location
    Western Head, Nova Scotia
    Posts
    3,089

    Default

    Well for what it is worth, I have had 3 P2s all purchased when they were at least over about 130K kms. Only one, the R, had a history of synoil. In all cases, I have run synoil exclusively since I took ownership with no problems, including leakage. In the case of the '02 XC, I put nearly 300K kms on it (it had 130 when I bought it) and never even had to do a PCV system change. Generally, I have run Mobil 1 or Formula (Can Tire-branded Esso (or Mobil) synoil) with a 0-40 weight.

    Cheers,

    Bill
    Western Head, NS CDN

    '08 BMW 750i (Black Sapphire)-204K kms to-date
    '05 XC70 (Lava Sand)-296K kms to-date
    '02 V70XC-gone @393K kms
    '05 V70R (Magic Blue)-120K mi to-date - gone
    '96 854R (Red)-real CDN-spec 5-speed R - gone @270k kms
    And other Volvos and misc. Euro stuff

  3. #3
    Join Date
    Feb 2010
    Location
    Virginia Beach
    Posts
    3,931

    Default

    Doubt it will cause leaks.

    My switch to synthetic has yet to cause any leaks on any Volvo I've owned. I am up to Volvo #5. My 3rd P2 (a 2001 T5) is in the driveway now. Doesn't leak.
    Current Fleet:
    2016 Tundra Crewmax 4WD 1794
    2005 MB S600 (100K, Michelin AS3+, M1 0W40)
    2002 V70-XC (258K, Castrol Edge 0W40)
    2002 V70-T5 (208K, IPD bars, Bilsteins)
    2001 V70-T5 (92K)
    1932 Packard Sedan (straight 8, dual sidemounts, original paint and interior, Shell Rotella 15W40)

  4. #4
    Join Date
    Feb 2011
    Location
    Windy Manitoba
    Posts
    631

    Default

    And if your car has been running on conventional (non synthetic) oil at the factory drain intervals, better save up for the PCV system replacement, sooner rather than later. Turbo engines are hard on oil you could be seeing a gunked up plugged mess of a PCV system (which will cause severe oil leaks . . .)

  5. #5
    Join Date
    Jan 2009
    Location
    Nebraska
    Posts
    1,442

    Default

    Bought and '02 with 120K on it and changed to synthetic oil the very next day (M1 0W40 or 0W30). It's been 10 years and 140K miles since and it hasn't ever leaked a drop. Now the L6 3.2 in the wife's XC90 is another story....

  6. #6
    Join Date
    Jan 2018
    Location
    Grand Rapids, MI
    Posts
    64

    Default

    Quote Originally Posted by sjonnie View Post
    Bought and '02 with 120K on it and changed to synthetic oil the very next day (M1 0W40 or 0W30). It's been 10 years and 140K miles since and it hasn't ever leaked a drop. Now the L6 3.2 in the wife's XC90 is another story....
    I wonder if synthetic really cleans everything its in contact with thus making turbo engines on P5s last longer.
    IF IT AIN'T BROKE - DON'T FIX IT!
    04 Volvo XC70 5LT 120k "Floatey" Ruby Red, Valvoline 0W40
    07 Honda Accord V6 115k Silver, Napa 5W20 Blend
    07 Honda Accord L4 110k Bronze, Napa 5W20 Blend
    96 MB C220 L4 330k, 20W40

  7. #7
    Join Date
    Jan 2009
    Location
    Nebraska
    Posts
    1,442

    Default

    Didn't clean squat in my car. What it doesn't do is break down into sludge that will clog your PCV and so continues to offer better protection through the life of the oil. Synthetic oil is good for 6 months, maybe even longer, I hear in Europe they do yearly oil changes now.

  8. #8
    Join Date
    Jan 2018
    Location
    Grand Rapids, MI
    Posts
    64

    Default

    Sorry for the late reply. Good to know that no one experienced oil leaks. How about consumption like burning oil?
    IF IT AIN'T BROKE - DON'T FIX IT!
    04 Volvo XC70 5LT 120k "Floatey" Ruby Red, Valvoline 0W40
    07 Honda Accord V6 115k Silver, Napa 5W20 Blend
    07 Honda Accord L4 110k Bronze, Napa 5W20 Blend
    96 MB C220 L4 330k, 20W40

  9. #9
    Join Date
    Feb 2010
    Location
    Virginia Beach
    Posts
    3,931

    Default

    Synthetic is better for keeping the turbo and PCV clean. You really want an oil that is rated A3/B4.

    You probably still need to do the PCV system.

    Viscosity and volatility matter more than basestock.

    I’ve been using Castrol 0w40 lately. Great oil. A3/B4. $23/jug on Amazon.

    API SN/CF, ACEA A3/B3, A3/B4, Meets Ford WSS-M2C937-A, BMW LL-01, Mercedes Benz 229.5 and 229.3, Porsche A40, VW 505 00 and 502 00

    https://www.amazon.com/Castrol-03101...xpY2s9dHJ1ZQ==

    I talked about this a while back in this thread:

    https://www.volvoxc.com/forums/showt...ded-engine-Oil

    I will add that Mercedes 229.5 and BMW LL-01 are very demanding specifications for long drain and high temperature. If an oil meets those, you’re good.
    Current Fleet:
    2016 Tundra Crewmax 4WD 1794
    2005 MB S600 (100K, Michelin AS3+, M1 0W40)
    2002 V70-XC (258K, Castrol Edge 0W40)
    2002 V70-T5 (208K, IPD bars, Bilsteins)
    2001 V70-T5 (92K)
    1932 Packard Sedan (straight 8, dual sidemounts, original paint and interior, Shell Rotella 15W40)

  10. #10
    Join Date
    Jan 2018
    Location
    Grand Rapids, MI
    Posts
    64

    Default

    I got some Valvoline High Mileage full synthetic oil. I realized I had been using a synthetic blend all along with no issues so I felt more comfortable switching to full syn. I did get a jug of 0w-40 A3/B4 oil for the next oil change.
    IF IT AIN'T BROKE - DON'T FIX IT!
    04 Volvo XC70 5LT 120k "Floatey" Ruby Red, Valvoline 0W40
    07 Honda Accord V6 115k Silver, Napa 5W20 Blend
    07 Honda Accord L4 110k Bronze, Napa 5W20 Blend
    96 MB C220 L4 330k, 20W40

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