View Poll Results: What oil do you use in your stock power big block ??
25-40
50
8.85%
15-40
28
4.96%
20-50
87
15.40%
straight 40
90
15.93%
straight 30
19
3.36%
syntec
9
1.59%
mobil 1
183
32.39%
amsoil synthetic
45
7.96%
R.P.
21
3.72%
OTHER
33
5.84%
Voters: 565. You may not vote on this poll

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POLL: which oil do you use ?

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Old 09-22-2005, 10:43 PM
  #111
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Quote:
Originally Posted by 37Talon
10 quarts Kendall GT 40 with one gallon of Lucas oil treatment and Fram filters. Change every 10-15 hrs.
..how about 10qts of Kendall Straight 40 with a K&N filter and hold the Lucas please..

Oil froth is a disasterous situation...look at the right side below with Lucas added...it's froth city. Froth is air and oil forming into a useless foamy mess... the Scaaeffer's additive on the left works good however. The goal is to help the lubricants "climb" into lifters etc. not foam all over the place.

My personal opinion...save your money and buy a better premium synthetic oil that will actually do something for your offshore engine. It's all I will recommend anymore.
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Last edited by Hydrocruiser; 09-22-2005 at 10:48 PM.
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Old 09-23-2005, 08:34 AM
  #112
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Default Re: POLL: which oil do you use ?

What's that a picture of? I'll tell you.....everybody has an opinion and an experience. I've never had that one. These are huge blower motors that I'm using that combo in. What oil temperature and pressure was the motor run to make the Lucas do that?
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Old 09-23-2005, 08:36 PM
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The product on the left did not foam under the same conditions..that's enough for me...if you like it use it...I won't so there will be on the shelf for you.

Last edited by Hydrocruiser; 09-23-2005 at 08:38 PM.
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Old 09-23-2005, 08:41 PM
  #114
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I was asked for marine K&N application part numbers...I am now a big K&N fan as they flow great and are built tough...great choice..here ya go..

http://www.knfilters.com/marine/maroilfilter.htm


K&N Performance Gold Marine Oil Filters

Engine K&N Part #
Small/Big Block Ford HP-3001
Small/Big Block GM (Long) HP-3002
Small/Big Block GM (Short) HP-2002
Big Block GM 2 QT Capacity HP-6002
Small/Block Chrysler HP-2004
Racing/Remote Filter Equal to Fram HP-6.. HP-5001
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Last edited by Hydrocruiser; 09-23-2005 at 08:52 PM.
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Old 10-05-2005, 05:40 PM
  #115
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A guy who knows me laughed his butt off at my postings here and the interest that has been generated around the subject of oil...he said before reading all this he thought the oil did all the work and now feels the additives are perhaps more important than the base oil itself.

Well he is exactly about 50% right. When the anti-wear additives are contaminated or molecularly "spent" the base oil is next to near useless and breaks down fast....and vice versa...so oils with high base contant complement a great additive package.

Adding a ton of great additives to a lesser base-stock however... "is like putting perfume on a pig".
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Old 10-24-2005, 04:27 PM
  #116
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Default Re: POLL: which oil do you use ?

Mobil 1
Been using it for over 20 years in my Car's, Truck's, Boat's and now my H-D V-Rod. Back in the 80's I ran it in a couple of turbo car's that are very hard on oil and never had a single issue. Yukon now has 180K miles without an issue and still running storng. My Z06 had it as a factory fill and I continue that at regualr intervals.
As stated previously the only drawback is the extra price but, to me it's an investment in reliability and longevity. small price to pay and worth the little extra to me.
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Old 10-24-2005, 09:26 PM
  #117
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Default Re: POLL: which oil do you use ?

My best friend and I both have 575SCis with 300 hours. His is modified to 650HP; mine to 750HP.
He used Mobil 1 for the 1st 150 hrs. and switched to RP 20W50 with excellent results.
I bought mine used with 76 hours, and can't remember what the former owner used in it. I have used RP 20W50 ever since with no oil related problems. We use RP 70W90 MaxGear in our superchargers, and K&N 6002 filters. We have stuck with Merc HP semisynthetic gear oil in the Bravos, again with good results. We change oil, blower oil, and gearcase oil every 25 hours.
Some of our friends have started running RP Max Gear in their Bravos as well.
I'm not shilling for RP, it just seems to work very well for us,
plus their bottles match my boat !
Regards,
Steve

Last edited by Steve Zuckerman; 10-24-2005 at 09:30 PM.
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Old 05-23-2006, 08:31 PM
  #118
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Quote:
Originally Posted by Steve Zuckerman
My best friend and I both have 575SCis with 300 hours. His is modified to 650HP; mine to 750HP.
He used Mobil 1 for the 1st 150 hrs. and switched to RP 20W50 with excellent results.
I bought mine used with 76 hours, and can't remember what the former owner used in it. I have used RP 20W50 ever since with no oil related problems. We use RP 70W90 MaxGear in our superchargers, and K&N 6002 filters. We have stuck with Merc HP semi-synthetic gear oil in the Bravos, again with good results. We change oil, blower oil, and gear-case oil every 25 hours.
Some of our friends have started running RP Max Gear in their Bravos as well.
I'm not shilling for RP, it just seems to work very well for us,
plus their bottles match my boat !
Regards,
Steve
I had a higher opinion of Royal Purple 20W-50 until Mike at Sterling said they did not like it's tendency to repel gasoline in the engine or water leaking into the drive/engine. It could set the stage for corrosion. I never used it much but he got my attention.

Mobil-1 seems to be a favortie because it is so widely used in autos and now in marine engines. The new formulation of 15W-50 M-1 EP is great. No surprises.

Last edited by Hydrocruiser; 05-23-2006 at 08:35 PM.
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Old 05-23-2006, 09:03 PM
  #119
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Default Re: POLL: which oil do you use ?

Royal Purple 7-10 hp on the dyno vs Mobile1




John
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Old 05-23-2006, 09:04 PM
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Default Re: POLL: which oil do you use ?

25-50 gt , performance racing oil, pennsoil... as per Dean Gellners orders.
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