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#21 |
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They don't carry Rotella. All good though, I took an earlier suggestion and bought 10 gallons of straight 30wt at 17.50/gal from Walmart.
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Dawson Pauley #2827 N/SA 1980 Malibu SW 2S 305/180 #2827 S/ST 1978 Mazda RX7 w/ 383 sbc/glide |
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#22 |
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![]() ![]() By the way Wal Mart brand Super Tech 5W-30 has always equated to Mobil One, so I've used it. Never an issue. Someone made a comment a week or so ago about a newer light weight oil that makes 3 horsepower on a 400 HP motor. What gives? |
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#23 |
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Without knowing base and additive packages in these specialty oils especially after covid … I would be hesitant about adding anything.
I do not pretend to be a chemical engineer.
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Barry Polley 758 A/SA California- No place to race! |
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#24 |
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Hello; I heard that Shell has reduced or eliminated ZDDP from their formula (pressure from the EPA!) Rislone makes the best additive; contains both zinc & phosphorus. The STP additive is way too viscous & only contains zinc. We use synthetic oil in our stocker: 5w20 in spring/fall & 5w30 in the hot weather. (for what's it worth)
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#25 |
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Couple of things to note.
1. It's not at all a good idea to play chemical engineer with motor oil. As described by Lake Speed in the video, you could be literally mixing up something quite detrimental to your engine. 2. Be aware, diesel oils are for engines that do not normally even run at the RPM your gasoline race engine runs at to break in the camshaft if it has flat tappets. As such, the diesel oil will foam and aerate.Even just as you break in your camshaft. Air is not a good lubricant for an engine, especially not a race engine. 3. There are good oils designed specifically to break in your engine, including your flat tappet camshaft.It pays to use them. Brad Penn makes a good one. Among others. Take from that what you will. Free advice might be worth what you paid for it. Or it might be priceless. Y'all think about it.
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Alan Roehrich 212A G/S |
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#26 |
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I agree with allen on this . Rotella has zinc in but also has detergent witch you don't want in a race engine. Why would spend 10's of thousand of dollar to build a race to then cheapin out with none racing oil and cheap filters. Race oil and good filter are a lot cheaper than a engine...My thoughts
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#27 | |
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Duane Hoven 1342 SS/GT |
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#28 |
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I don't know who you talked to at Driven, but their break in oil does have detergent in it. But this thread is about using diesel oil in race engine. Diesel oil has a high amount of detergent in it. Not got for race gas engines to have high detergent. will cause zinc film to be removed from engine parts. SAE did a technical paper series 2007-01-3999 that states this problem. So use what ever you want.
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#29 |
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I have friends who race mini sprinters with 600 cc motorcycle engines , buzz then 12000 rpm every lap their engine builders recommend rotella 15w40 .
Just sayin. |
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