Synthetic Blend Outboard 4T Oil

Snowgoose-1

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Without properly looking, I have bought Starbrite synthetic blend outboard oil for a 2006 Mariner 4T outboard.
I normally use Quicksilver oil.
The Starbrite synthetic blend seems to offer many benefits.
Can you think of any reason why I should not give the Startbrite a go ?
TIA
 

vyv_cox

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I cannot claim any specialist knowledge here but I have worked quite a lot with synthetic lubricants. Early synthetics contained esters that attacked and softened many elastomeric components such as seals and hoses. Modern synthetics largely avoid esters and are interchangeable with mineral oils, as you say offering considerable benefits.

I use synthetic lube oil in my 2CV kit car engine, where it performs well. Any engine that runs hot will benefit from the absence of short chain molecules.
 

Snowgoose-1

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Joined
2 Jun 2015
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I cannot claim any specialist knowledge here but I have worked quite a lot with synthetic lubricants. Early synthetics contained esters that attacked and softened many elastomeric components such as seals and hoses. Modern synthetics largely avoid esters and are interchangeable with mineral oils, as you say offering considerable benefits.

I use synthetic lube oil in my 2CV kit car engine, where it performs well. Any engine that runs hot will benefit from the absence of short chain molecules.
Very helpful.
Thanks
 
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