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Royal Purple HPS Oil #1317254
10/08/12 01:52 PM
10/08/12 01:52 PM
Joined: Jan 2003
Posts: 5,443
Indiana
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YO7_A66 Online content OP
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YO7_A66  Online Content OP
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Joined: Jan 2003
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Indiana
I need to change the oil and I am currently using Shell Full Synth 5w-30 + one bottle of ZDDP+. I have two more bottles of the "+" that I could add to about any oil, but I am also interested in the following from Royal Purple. I am not interested in all of the other oils, I am mainly interested if anyone is running the HPS series (High Performance Street) This is what I found on the Royal Purple HPS 10w-30: (Note: This is not the Royal Purple SL series oil)

Royal Purple 10W30 HPS (High Performance Street)
Silicon = 7 ppm (anti-foaming agent in new oil, but in used oil, certain gasket materials and dirt can also add to this number)
Boron = <5 ppm (detergent/dispersant)
Magnesium = 46 ppm (detergent/dispersant)
Calcium = 3626 ppm (detergent/dispersant)
Barium = <1 ppm (detergent/dispersant)
Total detergent/dispersant = 3676 ppm
Zinc = 1774 ppm (anti-wear)
Phos = 1347 ppm (anti-wear)
Moly = 189 ppm (anti-wear)
Total anti-wear = 3310 ppm
Potassium = 11 ppm (anti-freeze inhibitor)
Sodium = 2 ppm (anti-freeze inhibitor)
TBN = 10.2 (Total Base Number is an acid neutralizer to prevent corrosion. Most gasoline engine motor oils start with TBN around 8 or 9. And in use, this becomes depleted over time as mileage accumulates)
Viscosity (cSt at 100*C) = 11.3 (cSt range for SAE 30 is 9.3 to 12.4) And cSt (centistokes) in general terms, represents an oil’s thickness.

I know that I can get other oils with higher Zinc and Phos ratings, but this is available at my local NAPA store. With my NAPA discount, it should be less than $8 per quart. It also appears to have high enough Z/P numbers that I don't need any ZDDP+ to it and it appears that it should be fine for my mild flat tappet cam.
I am looking to keep the 5w-30 rating, so most of the diesel oils are out. The current Shell/ZDDP+ that I am using seems fine, but if this product has higher numbers, then I would be interested in changing.

What do you think?

Thanks

7412262-RPHPS5W-30.jpg (54 downloads)

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Royal Purple HPS Oil [Re: YO7_A66] #1317255
10/08/12 03:59 PM
10/08/12 03:59 PM
Joined: Dec 2007
Posts: 18,153
Mass
DAYCLONA Offline
I Live Here
DAYCLONA  Offline
I Live Here

Joined: Dec 2007
Posts: 18,153
Mass
I've been running it (RP HRS) in all my toys for the last 7-8 yrs, flat tappet engines, sm&Bblk,....no issues, usually still looks good (golden brown) between oil changes (2500-3000 mile)...either run a RP oil filter/WIX/ MP HP filter, makes a world of difference, you'll see it at an oil change...

Mike

Re: Royal Purple HPS Oil [Re: DAYCLONA] #1317256
10/08/12 04:46 PM
10/08/12 04:46 PM
Joined: Jan 2003
Posts: 5,443
Indiana
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YO7_A66 Online content OP
master
YO7_A66  Online Content OP
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Joined: Jan 2003
Posts: 5,443
Indiana
I run the NAPA Gold filters which I believe are made by WIX.
Thank you for your reply Mike. I hope to pick some up this week.


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)






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