Synthetic or mineral bravo 1 ?
#1
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Here we go...![Food Smiley 007](/forums/images/smilies/food-smiley-007.gif)
so, last winter i sent one of my drives to THE performance merc dealer of my state... no resl reason to send it, besides the fact i ran them for 10 trouble free years, that is on top of previous owner...
they only changed 1-2 seals, plus maybe 1 shim...
since i ran them with 75-90 synthetic oil i thought it was good since i never had any problem... they sent me the drive back with 3 notes on the drive, like
synthetic is a bad oil
never use synthetic in drives
use only mineral oil
they sure know better than i do about that, they fill it with merc racing 85-90
but i dont get why i was warned that much not to use syntethic oil !
whats your take on that? Seems like most hi hi perf boat run synthetic!
![Food Smiley 007](/forums/images/smilies/food-smiley-007.gif)
so, last winter i sent one of my drives to THE performance merc dealer of my state... no resl reason to send it, besides the fact i ran them for 10 trouble free years, that is on top of previous owner...
they only changed 1-2 seals, plus maybe 1 shim...
since i ran them with 75-90 synthetic oil i thought it was good since i never had any problem... they sent me the drive back with 3 notes on the drive, like
synthetic is a bad oil
never use synthetic in drives
use only mineral oil
they sure know better than i do about that, they fill it with merc racing 85-90
but i dont get why i was warned that much not to use syntethic oil !
whats your take on that? Seems like most hi hi perf boat run synthetic!
Last edited by jeff32; 08-27-2024 at 04:05 PM.
#2
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I thought the merc racing 85-90 was a synthetic blend??
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I believe the issue with synthetic is the cone clutch, Ive never ran it and my drive guy said no also. The bottle up top ^^^^ is not a synthetic or a blend
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was just shortening the word to synthec
i edited my original first post
to synthetic
so, in what or where do you use the Amsoil synthetic oils and the likes and in what drives ?
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#8
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There is no part number associated with this link to compare what you have in hand or if that is considered their "Extreme Gear Lube" but straight from the Mercury Racing sight HERE!
Their 85W-90 Extreme is Full Sythentic.
![](https://cimg0.ibsrv.net/gimg/www.offshoreonly.com-vbulletin/792x550/screenshot_2024_08_27_172547_e98ae8881686433ea64e5455dabfc38ae9720404.png)
Their 85W-90 Extreme is Full Sythentic.
![](https://cimg0.ibsrv.net/gimg/www.offshoreonly.com-vbulletin/792x550/screenshot_2024_08_27_172547_e98ae8881686433ea64e5455dabfc38ae9720404.png)
Thanks. Brad.
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There are many other synthetic oils not sold in pyramid schemes, though.