Another Oil Question
 

OK well where is Borgie when you need him? I was wondering about using Delvac Super 1300 15W-40 oil in a 500 HP what are your thoughts?:pacifier:

Delvac is a diesel oil with high detergent properties, it may be more prone to foaming at gas engine rpms, that said I pretty much run rotella 15/40 in all my older stock engines that get run infrequently.

Most diesel oils are spec'd to cover gas engines. Foaming is not an issue using a HDEO in a gasoline powered engine, regardless of output.

http://www.offshoreonly.com/forums/g...le-delvac.html.

smile:

and

Main consensus but not held in stone is you are looking for NOT the reduced EPA mandated anti wear of ZINC and PHOS.

Main consensus most of the time lists 1300 ppm of Zinc / ZDDP and 1300 ppm of phos or very close to these anti wear numbers - to be used for FT and higher HP apps - high load apps . Yes some will agree with about 100 or 200 ppm less but overall 1300 ppm seems to be the figure talked about.

I know Chevron 15w 40 400 LE is very close to this plus they have very good additive technology. VR1 is good oil to.

Driven Oil has a lot great info posted and I would recommend their products. They use some the newer Chevron relate additive technology. Just saying. I have good luck with Mystik for non high performance apps. FWIW.

Current car oils off the shelf are .800 ppm of ZINC and PHOS. Do not run these in your boats. I had a not so smart run 5 w -20 in his boat for the summer one year and his thoughts was that his Ford 150 - 5.4L Triton gas engine used it, so had to be good for his boat to. Low oil pressure warning horn went off one day after a long run. Short story was - I Cut open the oil filter and there was bearing material in between the pleats and very low oil pressure readings on top off. Just saying.

My builder said any oil as long as it says off road only. Because the wear additives have been removed from most oils used in today's cars and trucks. I was a firm believer in Mobile One full synthetic 15-50 and my bottom end was in good condition but he insist 15-50 off road oil. I still have not decided on the brand.

Joe Gibbs. Non synthetic is fine. 15-50 Very good oil

I thought offroad oil is like Racing oil. Only meant for few runs not recommended for longer term use.

Valvoline Racing oil has higher zinc levels. It lasts fine. I use 30W Valvoline racing in my engines.

Here:
http://www.valvoline.com/faqs/motor-oil/racing-oil/

Even better read:
http://www.valvoline.com/pdf/vr1_racing.pdf

Why is it no one reccomenda Amsoil Dominator

I am still running M1 v-twin 20/50 in my big boat and M1 4t 10/40 in the jet boat and supercharged jet ski's. They have consistently tested well on all the forums and both have high levels of zddp (>1600ppm or 1300 for the 4t). Never bought into the purple gimmick and plan on sticking with a company that has consistently produced great products from their own R&D since I have been around racing.

Both these oils are (offroad or non-catalyst) motorcycle rated and according to a letter from ExxonMobil that is somewhere on this forum, most suited to high performance marine engines.

Yup.

Mobil has a great chart that shows Zinc, Phosphourus and many other things on all their oils on an easy to read chart here:

https://mobiloil.com/~/media/amer/us...ecs-guide.ashx

thanks for posting the chart, the link I had was a dead end

and like I said as the VRI is showing 1400 ppm and 1300 ppm of Zinc and Phos / ZDDP. Again the general statements overall of opinions of how much is really needed to offer very good anti wear protection. Oil is all about balance - you can not over base one additive too much because it can over power other additives from doing there job.

Great response Thanks! So reading between the lines SB & BUP the delvac super 1300 15W-40 with or without a zinc additive would be OK ? is that the concenses?

Mobile One 15w-50 and a bottle of Lucas Oil additive in each engine ----Never had a failure ! !

Racing oil = less detergents but more antiwear zinc... or so they claim.
so less wear but dirty oil and engine deposits unless you change it every weekend which is what racing oil is meant for.
I`ll stick to regular oil.

Bup. How is the mystik oil ? I have heard good things but never tried it.

Anyone running klotz oil besides me

I have been using VR1 straight 40w for years with great results. But (in the back of my mind ) I have always been worried about the cold start flow properties of the straight 40. after looking into the v-twin specs, I really think I want to change to the V-twin 20w-50 for this season and compare temps and pressures! it is API-SJ rated.
It seems to me that this oil may be able to handle the heat generated by long WFO bursts! One of two things will happen, it will be great or the lower end will be in the bilge! I'll let you guys know in the fall.

I have been using the Mystik for going on 3 years now. Mainly all the boats under 500 hp. I do not as of yet use anything motor oil related from them or anyone else that is NOT CAT approved for the marine catalyst engines ( all of them are under 500 hp and mandated)

. If a CAT was to fail and could ever be traced back to oil additive contamination or an oil related problem, I want the oil company or the marine OEM engine manu recommendations to be the ones accountable and take on full liability.

For the marine CAT engines I have been following and to keep all warranties in check I have been using MARINE CAT APPROVED motor oils. It has been back and forth battles about the motor oils used and the recommended oils for the past 6 years for these apps.

Mobil 1 V Twin here, been using for years.

Last year, I contacted several oil companies for an oil recommendation for my marine supercharged engines. Only a few of the companies replied back, but one company stood out to me.

That was Joe Gibbs "Driven" oil. Before they gave me a recommendation, they asked the following questions (unlike the others who asked nothing about the clearances)

"What are the main and rod bearing clearances?"

"Are these engines used for racing, or high speed poker run style events".

The fact they were the ONLY company who asked me those details, made me feel better. Obviously, not all engines are the same. A 310HP 454 mercruiser, isnt going to require the same oil as a custom built 800,900,1000+hp blown engine.

With that being said, they recommended their MR50 engine oil. It is a 15w50 marine specific synthetic oil.

Formulated Specifically For High Output Marine Engines

Excellent protection for high performance marine engines. Ideal for flat tappet cams, big blocks and blown marine engines. MR50 contains rust inhibitors for winter storage and defense against Ethanol blended fuel. Viscosity typical of 15W-50.

ZDDP Anti-Wear Package
High Temp High Shear Stability
Friction Reducing Additives
Storage & Start-Up Protection

http://www.drivenracingoil.com/dro/m...oil-15851html/

hey Joe, how much hp will I gain running that grade? Enough to forget about supercharging you think?

Joey, I think thats a better question for Borgie, as far as how much power you will gain from the oil change.

If you have questions about mounting blowers on your engines, and making that 12 Meter wake up from its slumber, call me! :drink:

Oh I remember that very long thread - Lake Speed Jr replied back to you and the good old days with Borgie.

Probably best if I don't change the oil so it thins out (less friction) and that should help.

Every time I go to pull the trigger on blowers I buy a car, or snowmobile, or ATV. Been on one hell of a roll lately. Can't even afford to renew my membership now. :lolhit:

Joe PM full?

:party-smiley-004:I found this stuff to be fantastic when you are working on vehicles / boats / engines all day

http://bp0.blogger.com/_WigxWmT65Jk/.../Motor_Oil.jpg

Lucas Extreme Duty Marine 20W50

Me or mild?

right what the hull was I thinking? Mild's, sorry must be dementia setting in!

Sorry, my inbox was full abones. I had to delete some hate mail. All good now.

That's funny ^^^^

As a point of information, the motor oil standards do not mandate lower zinc & phos levels for what they consider heavy duty motor oils (15W-XX and above), and they can run whatever levels they want and still be SJ/SM, etc rated. Hence why Mobil 1 15050 can be rated SM and still have 1300+ ppm zinc and phos (levels I see on the used oil analysis from M1 15W-50).

Just curious to know why you guys don't like merc oils? I know know it's brand specific but they recommend it in all there big hp engines.