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Ray you don`t know what you`re talking about!
My mothers, sisters, cousins, daughter in laws across the street neighbor who has flake paint bass said synthetics make his pistons slide too fast in the motor! Thats all the proof i need buddy! |
Too slippery. Geeez, I didn't even want to go there, but as Ray says LOL. Think about what a person is saying when they say it is too slippery. If it were that slippery that the roller wasn't spinning than how would it wear? The cam and lifter are wearing as a result of too much friction not too little friction! Most of the problems go back to a period in time where a certain "large" DOMESTIC lifter company went out of business. Domestic is the key word here. The cam and lifter manufacturers needed to blame somebody for the new problem of wiping out their cam and lifters. The oil must be the culprit.
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Originally Posted by Raylar
(Post 3695950)
Everytime I read these threads on use of synthetic oils in Mercury Racing engines and those comments about roller lifters not rolling properly over roller camshafts I absolutly CRACK UP and if I am drinking hot coffee or otherwise I usally spit it out laughing my ass off! I am always amazed at the Bullsh*t spread around about the use of synthetics in marine engines! Use the correct weights and types and you will ALWAYS have less wear, less heat and more power using synthetics PERIOD!
Parafin in synthetics - WOW that Merc rep must have been smok'in his crack pipe to hard!:lolhit: Someone's gonna have to bend my mind real hard to get me to change my experience in this area. You take apart, build and manufacture as many engines as I have and others in the industry who know the benefits of proper synthetic oil use and your gonna be old and gray before you ever convince us otherwise! Mercury's 25-40w blended premium (Quicksilver) oil is a very good quality oil and will work wondefully in any Mercury engine where its recommended. You should probably buy some Mercury (Brunswick) stock at the same time and maybe you get a little return on that big investment in their promoted-overhyped oils? Best Regards, Ray @ Raylar |
like Ray I always laugh when I see stuff like this. too slippery for roller lifters? then how come nearly every factory performance engine, i.e. corvette, specifies synthetic oil? as far as I know most every engine built since the mid ninties has been roller lifter including my GMC 3500 that has had mobile 1 15-50 in for over 270,000 miles now. our open class motors and super cat motors ran for hours at 7800 rpm all with synthetics. one of our super cat motors lost water and ran for two miles at 7800, the oil temp gauge only went to 300 degrees and was still pegged hours later. when it was pulled apart it looked perfect inside with no signs of heat damage, in fact other than the heads being warped and the rings loosing tension you would never have known it got hot. after that you will have a hard time convincing me that synthetics cause any problems.
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Been using Mobil One almost since it first came out in a number of boats that I have owned over the years and NEVER had an engine failure --- Dont worry about the small sh$t !!!!!.If its good enough for Indy,Nascar and drag racers its good enough to put in your boat engines........ I put Mobil One in every thing I own including my Gen set....
Jim |
Hey, it looks like I over reacted to the Mercury sales rep answer about paraffin in synthetics.
I being a purist, when I hear synthetic used to describe an oil or base stock, I think of a true synthetic, Group IV or Group V, a man made base stock, one that has uniform molecular size. There is unfortunately a Group III synthetic base stock, which is nothing more than a highly refined petroleum base stock, therefore, you can find paraffin in a synthetic base stock. I guess I have to say hats off to the Merc rep. Ken |
If you need a GOOD reason to not run fake oil...go look at this... http://www.youtube.com/watch?v=xZxC7...2&feature=plcp . This 502 motor came out of a 32 Fountain running Mercruiiser fake oil and the manifold sprung a leak and loaded the motor up with water. It mixed with the fake oil and not only did it do the mike-shake thing...the stuff was more like a thick pan cake batter. This stuff was very slick, but also very sticky. It did not all drain out. After it quit running out, I pulled the motor apart and then went to the car wash and spent $35.00 trying to get this crap out of the motor.
If you run fake oil and get a water leak on the inside, you can not flush the motor and refill it with oil...you will have to totally take the engine apart...wash it and cook it to get the stuff out. |
What do we think of using synthetic oils in a flat tappet motor?
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Pslonaker:
I have personally torn more engines down with water and coolant intrusion in them then you have probably dreamed about and many were using synthetic oils and as with all engines with water in the oil and after the milkshake event it takes a good solvent wash to remove the mixtures and resulting goo whether they are conventional or synthetic. Please also remember that Mercruiser 25-40w Quicksilver oil is a blend of conventional and synthetic bases and not pure synthetic or "fake" as you so vividly describe it. The truth is with water in an engine the synthetics will do a better job of continuing lubrication than a conventioal oil with water or coolant mixed with the oil. The biggest issue most boaters have with oil in their engines is using the wrong weight oil and the incorrect type for their applications. Good conventional oils can do a good job properly weighted and typed and all oils wrongly applied either conventional or synthetic (fake) can cuase issues and problems in marine engines. Best Regards, Ray @ Raylar |
Rivermonkey, synthetics will work just fine in a flat tappet motor as will petroleum based oils
The big issue with both is diminished levels of zinc/phosphorus, the anti-wear additive. All major auto/diesel oils have lower levels of zinc. They have to to have the latest API rating. I have been running Spectro Motorguard oils for years and the oils have levels of anti-wear in the 1600-1800 parts per million. Unheard of in today's lubricant market. Ken |
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