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Originally Posted by 07DominatorSS
(Post 3386898)
Are you a chemist? If one was to add too much Zinc, it will cause the oil to foam, and you lose all protection of the oil.
What is too much zinc? Over 1200PPM, 1500PPM? Ken |
i use it in the diesel and in the boat. Just picked up 16qts for the twins for about 50 bucks at walmart. Shell rotells oil is the best bang for the buck. It has an SM rating on back which I beleive is good for gasoline engines.
Oil is something that everybody has opinion. I for one feel people get label crazy and spend way to much money on oil. Now if you are racing or have a crazy set up then sure I would probably go with some crazy oil. but if you are the average joe smoe with a 454 or 502 the standard oil that meets manufactures specs(even though what merc calls for is straight 40w, and even most service departments wont even do straight 40w) will be fine with what they use. I see no reason for the average boater to spend 10 bucks a qt on oil. If rotella keeps my diesel kicking and semis kicking its goog enough for the old BBC. |
Originally Posted by Boat1
(Post 3386369)
I called the number on the Rotella container about a month ago and asked specifically about the zinc additive. The person told me the zinc additive has been removed from Rotella T and Rotella products. Valvoline VR-1 is the most available oil that still has zinc additive, it's in a silver bottle not white. Straight 40 is what I use in the naturally aspirated marine engines, 50 in supercharged. Diesel engines do not have high spring pressures on the lifters due to the low rpm, they really dont need the zinc. Hope this is helpful.
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Originally Posted by dbkski
(Post 3386179)
A few minutes of reading here and you will have all your answers.
http://www.shell.com/home/Framework?...ucts_home.html http://www.deloperformance.com/produ...FUa8KgodMEETFA http://www.mobil.us/USA-English-LCW/...aspx?WT.srch=1 I sent Hydrocruiser a PM recently about the Rotella, Delo, and Delvac diesel oils sold by Wal-Mart. He said they are all extremely similar and equally excellent. Prices range from $9.50 to $12.00 per gallon. I use Rotella T 15W-40 conventional now but would not hesitate to use Delo or Delvac if they go on sale! have had good luck with Delvac as well |
Get it from a good supplier of industrial lubricants. I only ran that in the marina forklifts, travellift, trucks etc.
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Originally Posted by Fountain4402
(Post 3387306)
i use it in the diesel and in the boat. Just picked up 16qts for the twins for about 50 bucks at walmart. Shell rotells oil is the best bang for the buck. It has an SM rating on back which I beleive is good for gasoline engines.
. |
Originally Posted by minxguy
(Post 3387259)
? Really?
What is too much zinc? Over 1200PPM, 1500PPM? Ken |
Originally Posted by 07DominatorSS
(Post 3386898)
Are you a chemist? If one was to add too much Zinc, it will cause the oil to foam, and you lose all protection of the oil. You should NEVER add anything to any oil, PERIOD!
Everyhing I've read says that for the best wear / abrasion resistance between "grey iron" surfaces, it gets better with zddp additive until around 1200 ppm and there's little benefit after that. Comp cams, Lucas and several others make well done formulations that will put the zddp levels around that point when added to regular automotive oils (synthetic, non-synthetic and blends). Such additives are formulated by chemists with substantial specific experience combined with testing before products are released so they will increase scuff protection without creating a foaming issue. Just my experience and impressions based on a lot of reading and some advice from engine builders, mechanics, etc.. that I trust. Respectfully submitted... ps. Your intuition is nothing short of amazing. Believe it or not, I really do happen to have a PhD in chemistry... ;-) |
Originally Posted by Fountain4402
(Post 3387306)
i use it in the diesel and in the boat. Just picked up 16qts for the twins for about 50 bucks at walmart. Shell rotells oil is the best bang for the buck. It has an SM rating on back which I beleive is good for gasoline engines.
Oil is something that everybody has opinion. I for one feel people get label crazy and spend way to much money on oil. Now if you are racing or have a crazy set up then sure I would probably go with some crazy oil. but if you are the average joe smoe with a 454 or 502 the standard oil that meets manufactures specs(even though what merc calls for is straight 40w, and even most service departments wont even do straight 40w) will be fine with what they use. I see no reason for the average boater to spend 10 bucks a qt on oil. If rotella keeps my diesel kicking and semis kicking its goog enough for the old BBC. |
I use Amsoil 20-50 Full synthetic oil
http://www.amsoil.com/techservicesbu...t%20Tappet.pdf AMSOIL Synthetic Motor Oils Phosphorus Zinc Level Level (ppm) (ppm) AMO 10W-40 Synthetic Premium Protection Motor Oil 1265 1378 ARO 20W-50 Synthetic Premium Protection Motor Oil 1266 1379 HDD Series 3000 Synthetic 5W-30 Heavy Duty Diesel Oil 1266 1379 AME 15W-40 Synthetic Heavy Duty Diesel and Marine Motor Oil 1267 1377 AMSOIL Synthetic Racing Oils Phosphorus Zinc Level Level (ppm) (ppm) RD20 Dominator Synthetic Racing Oil 5W-20 1424 1575 RD30 Dominator Synthetic Racing Oil 10W-30 1424 1575 RD50 Dominator Synthetic Racing Oil 15W-50 1424 1575 AHR SAE 60 Synthetic Super Heavy Weight Racing Oil 1265 1375 |
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