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  1. #1
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    208

    Default "Im thinking of moving away fr

    "Im thinking of moving away from mineral oil. Currently running Penzoil 15W-40. Do they mix? Is it a straight change with filter,or do you have to remove every drop of mineral oil first. Are blends OK for interim period? Engine only 55 hours since last rebuild, its still pretty clean inside. Guy recommended a brand to me a few weeks back, not sure I can get it in oz."

  2. #2
    Join Date
    Aug 2006
    Location
    SW Ohio, USA
    Posts
    10,396

    Default "It's a straight change w/

    "It's a straight change w/filter. Mobil 1, Penzoil, 15W40 or 15W50. Merc. has a synth. 25W40."
    Fix minor things (replace wear items for preventative maintenance.) that cause major problems before they break.

  3. #3
    Join Date
    Jul 2008
    Location
    Northboro, Ma, USA
    Posts
    4,788

    Default Do you have NAPA auto parts in

    Do you have NAPA auto parts in OZ?

    If so or even if not Valvoline makes a very high quality full synthetic and if you have NAPA store it is bottled under the NAPA name.
    Jack
    Northborough Ma
    Helping others sometimes with an attitude....haha..

  4. #4
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    208

    Default "No NAPA. Ok we got Shell Hel

    "No NAPA.
    Ok we got Shell Helix, Valvoline, Penrite, Mobil 1, Nulon, CastrolEdge, Pennzoil. Guys with Mobil1 which weve got, I think all the above have full synthetic, any thoughts..btw, 5 litres of good mineral oil here is $30. 5 Litres of Mobil 1 is $70. (over double) Do you have the same increase in the states? Oh yeh, how often do I change this stuff? (we dont winterise here)"

  5. #5
    Join Date
    Aug 2006
    Location
    SW Ohio, USA
    Posts
    10,396

    Default "I can buy 5 qts. of Mobil 1 f

    "I can buy 5 qts. of Mobil 1 for $24 on sale; regular price is $30. I use it in my boat, SUVs and truck. Both SUV's get their oil changed every 5,000 miles (8,047 Kms) after 8-9 months which is estimated to be 125 hrs. The truck gets changed annually (about 3,000 miles) and the boat annually (25-50 hrs.).

    I would not change it for a year or until the color turns a dark strong tea color. Change the oil filter at 6 months and top off the engine oil level. Use a high quality oil filter. JMHO."
    Fix minor things (replace wear items for preventative maintenance.) that cause major problems before they break.

  6. #6
    Join Date
    Jul 2008
    Location
    Northboro, Ma, USA
    Posts
    4,788

    Default If mobil one is to $$$$ Che

    If mobil one is to $$$$

    Check the valvoline and let us know how much.
    Jack
    Northborough Ma
    Helping others sometimes with an attitude....haha..

  7. #7
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    208

    Default "Yeh, about same as im doin no

    "Yeh, about same as im doin now, once a year whether it needs it or not.
    btw, Mob1 $70 AUD is equiv to $83 USD, which is why Im postin really, is the extra $53 bucks per oil change worth it? Is the synthetic that much better in these older style engine?
    Seems to me you guys get the synthetic quite cheap, so why not use it.
    ghost Im checkin valv prices, will let you know. mark."

  8. #8
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    208

    Default "Found a cheap Synthetic, ne1

    "Found a cheap Synthetic, ne1 heard of Penrite? petrol heads in oz swear by it..sale ends today. Its usually $50 AUD ($60 USD)today only $45 AUD ($54 USD). still lookin for valv.. http://catalogues.repco.com.au/porta...p;pageview=two"

  9. #9
    Join Date
    Apr 2008
    Location
    middletown, DE, USA
    Posts
    21

    Default Once you go synthetic....you c

    Once you go synthetic....you can never go back to dino!!!!!

  10. #10
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    208

    Default "Ghost. i found valvoline, Ful

    "Ghost. i found valvoline, Full Syn $57 AUD ($68 USD)normally $63 AUD ($75 USD). only slightly cheaper than mobil1.
    btw, I tried the valvoline website lubeguide. It recommends "VALVOLINE PREMIUM MOMO 30" for 1988 260 Mercruiser..this is a mineral oil, for 2 stroke diesel engines, or petrol where mono grade is recommended..confused. Mark.

    http://www.getprice.com.au/Valvoline...--39314722.htm

    http://www.datateck.com.au/lube/valv_auMS/default.asp"

  11. #11
    Join Date
    Aug 2006
    Location
    SW Ohio, USA
    Posts
    10,396

    Default "Once you go synthetic....

    "Once you go synthetic....you can never go back to dino!!!!!"

    Ed:

    Please enlighten everyone why; I've never heard that statement before. Any studies to refer?
    Fix minor things (replace wear items for preventative maintenance.) that cause major problems before they break.

  12. #12
    Join Date
    Aug 2006
    Location
    SW Ohio, USA
    Posts
    10,396

    Default Mark: Perhaps the cost is n

    Mark:

    Perhaps the cost is not worth the benefit on an old engine?
    Fix minor things (replace wear items for preventative maintenance.) that cause major problems before they break.

  13. #13
    Join Date
    Apr 2008
    Location
    middletown, DE, USA
    Posts
    21

    Default "It has to do with seal swell.

    "It has to do with seal swell...no problem with newer engines and modern seals, but with older engines it will cause oil leaks!"

  14. #14
    Join Date
    Jul 2008
    Location
    Northboro, Ma, USA
    Posts
    4,788

    Default Do not worry about type of oil

    Do not worry about type of oil. use what you want and can afford.

    Regular changes is what is important and keeping it from over heating ( over 280 degree)
    Jack
    Northborough Ma
    Helping others sometimes with an attitude....haha..

  15. #15
    Join Date
    Aug 2006
    Location
    SW Ohio, USA
    Posts
    10,396

    Default Ed: I believe the issue w/s

    Ed:

    I believe the issue w/seals and synthetic oil is that using syn. oil in an engine w/hardened or worn gaskets and seals will leak. BTDT. Changing from syn. oil to dino oil will make no difference on gaskets and seals.
    Fix minor things (replace wear items for preventative maintenance.) that cause major problems before they break.

  16. #16
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    208

    Default "Everyone, thanks for all your

    "Everyone, thanks for all your comments, my seals are good so even if Ed is right, Im ok.

    Im goin to find out more about the $45 Penrite full Synth, if its ok (maybe re-badged Valv?)then Im comin over to the oily syn club..Mark."

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