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Thread: 25w50

  1. #1
    Platinum Member Platinum Member MILD THUNDER's Avatar
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    25w50

    Ordered some of this mystik oil to try this year. Looks like 25w50 is making a home in the marine market?

    https://www.mystiklubes.com/do/produ..._PWC/663097002

    https://www.wholesalemarine.com/merc...-outboard-oil/

    https://www.jamestowndistributors.co...t.do?pid=63748
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  2. #2
    BUP
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    Merc has Citgo make some of their oils so I would bet that the 25 w 50 is very close if not the same. Sierra does not use Citgo to formulate their oils.

  3. #3
    BUP
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    Citgo owns Mystik as mentioned up here before. And Citgo has been making oils for the marine side for many years. Including 2 stroke oils
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    Platinum Member Platinum Member MILD THUNDER's Avatar
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    I run their gear lube, might as well try their engine oil too

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    still rather run a full synthetic,,this hasn't let us down in 12 yrs,not gonna change now.brought to you by walmart permformance.

    https://www.walmart.com/ip/Mobil-1-2...&wl13=&veh=sem

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    Platinum Member Platinum Member MILD THUNDER's Avatar
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    Im a cheap azz. Got the mystik online for 55 bucks a case.

    The mystik gear lube at farm and fleet is 65 bucks for a 5 gal pail (like 100 bucks at oreillys auto). Between the speedmaster drives, and the 11 qt per engine oil, using the fancy synthetic fluids, it costs me 500 to change drive and engine oil, vs 175 for the mystik stuff.
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    Quote Originally Posted by MILD THUNDER View Post
    Im a cheap azz. Got the mystik online for 55 bucks a case.

    The mystik gear lube at farm and fleet is 65 bucks for a 5 gal pail (like 100 bucks at oreillys auto). Between the speedmaster drives, and the 11 qt per engine oil, using the fancy synthetic fluids, it costs me 500 to change drive and engine oil, vs 175 for the mystik stuff.
    I hear yeah.

  8. #8
    BUP
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    Motorcycle oils are made for gear synchronization and allowing some friction for the internal clutch packs - many people in the bike world have had clutch slippage issues when using medium to high base moly formulated oils in their motorcycles. (Basically in laymans terms engine oils that are too slippery)

    There is a reason that a bike is pictured on the bottle. I understand u have not had a failure using this motor oil but most likely would not have any failures with straight 40 w bought under the O Reilly's name either. Current Motor oils is not the primary factor of engine failure anyways. overheat, detonation, poor fuel and or fuel systems issues, dirt, lack of maintenance - totally wrong motor viscosity, and so on are. the root of engine failures. Just my 2 cents
    Last edited by BUP; 05-14-2017 at 12:22 PM.
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    In particular around 2005 when slipper clutches came on the scene in motorcycles we had to revert back to the dinosaur oils until they added friction modifiers into the synthetics.

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    Quote Originally Posted by BUP View Post
    Motorcycle oils are made for gear synchronization and allowing some friction for the internal clutch packs - many people in the bike world have had clutch slippage issues when using medium to high base moly formulated oils in their motorcycles. (Basically in laymans terms engine oils that are too slippery)

    There is a reason that a bike is pictured on the bottle. I understand u have not had a failure using this motor oil but most likely would not have any failures with straight 40 w bought under the O Reilly's name either. Current Motor oils is not the primary factor of engine failure anyways. overheat, detonation, poor fuel and or fuel systems issues, dirt, lack of maintenance - totally wrong motor viscosity, and so on are. the root of engine failures. Just my 2 cents
    5-6 sets of 1200hp blower motors says,,I'll buy that for a dollar.and there not some 1 season wonders either.
    that oil took care of a heavily boosted 496 gen 7 engine that was still closed cooled,,oil pressure would go down to 5ishlbs.twin v and oil never went below 35.btw,they were the first engines in the 47 excaliber(all 23k lbs of her).if that was ever a torture test,nothing is.its new 4l whipple 581's run that oil too.just my 10 cents.
    Last edited by sutphen 30; 05-14-2017 at 08:13 PM.
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