I ended up going with the dealer reccomended 25-40 semi synthetic. Surely a scam "semi-synthetic" but in the end just not worth it to me to find out I put the wrong stuff in. The motor is 11 yrs old now with no major work...just regular maintnance and driven to church by grandma every sunday with only 530hrs!!
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What do they charge for the dealer 'semi-synthetic' quart of oil. Is it the MerCruiser or Quicksilver brand of oil?? I suspect Mobil 1 is equally as costly although I do purchase it at the Costco Boat Center who seems to have the best price???.....
I am of the belief the synthetics motor oils provide the best protection and lubrication characteristics therefore since I change all my vehicle's oils I use synthetics. In conversations with MerCruiser tech's I was exceeding manufacturers specs which I felt I was still ahead as I did the work and my shop labor is less than the boat shops...
BTW..I was attempting to make a funny about the 'Costco boat Center'Comment
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lol on Costco.....
A 1 gallon jug of 25-40 semi synthetic set me back $26.95!!. Thats about$7 per quart. If you can get the same weight cheaper I would go for it. Mercruiser certainly does not have the only quality oil out there.Comment
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does anyone think it matters if you went from a conventional to a semi synthetic? I have no clue what oil was used in the boat I purchased? I am thinking of going with a 25w-40 semi synthetic oil from now on.Comment
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Not certain but I would guess MerCruiser gets their oil from somebody, Mobil, Texaco, Valvoline etc and re-labels it for sales.....I agree, there are many fine oils that are very capable of meeting/exceeding the specs for marine applications.....Comment
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