Here is my email:<br /><br />I am very confused about engine oil for my sterndrive engine.<br /><br />Your website states that synthetics are not recommended, yet you market a synthetic blend oil for sterndrive engines.<br /><br />You also list that if I cannot obtain your Merc 25W40 oil to use a straight grade with API category ratings of SH,CF/CF-2.<br /><br />The SH category rating is obsolete --<br /> http://api-ep.api.org/filelibrary/Guidechart2002.pdf What do I do? I cannot find oils that meet an obsolete API category rating.<br /><br />When are you going to update your website to reflect your new synthetic blend oil? When are you going to add your synthetic blend oil to your<br />website?<br /><br /> http://www.mercurymarine.com/fueloil_recommendation_faqs#1124 <br /><br />When are you going to update the obsolete SH category recommendation to an SJ or SL?<br /><br />Any help would be appreciated.<br /><br />Regards,<br /><br />Gary<br /><br />============================<br /><br />Their response:<br /><br />Mercury has just recently developed a 25W-40 synthetic blend oil that we are recommending in our latest engines. This oil was not available when your engine was built. If you choose to use a synthetic oil, this one is the only one we recommend. Our conventional 25W-40 oil is also a blended oil of a straight 25 and straight 40 weight oils, like the synthetic blend. If you choose not to use either of these oils, our next recommendation is either a straight 30 or 40 weight oil. Any good quality automotive detergent oil of these weights would be fine. We will be addressing the website asap.<br /><br />Best regards,<br /><br />MerCruiser customer service<br /><br />============<br /><br />My comments:<br /><br />At least they aren't saying that they don't recommend synthetics because they haven't tested them (like they used to in the past) 
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