Royal Purple HPS vs API-certified

s550v6 · Mar 13, 2017

I just ordered a case of 6qts of RP HPS and my friend is giving me grief that since it is not warranty compliant as soon as I put it in my car my entire powertrain warranty is void....as if adapting a GT throttle body to fit my V6 isn't voiding it enough.

My real question is do I have anything to worry about in the way of my engine blowing up or something from the added ZDDP? I think I'll be fine but I was wondering what you all think?

Fuse · Mar 13, 2017

Uh.. no? Pretty sure you'll be fine. Never heard of oil blowing up engines.

s550v6 · Mar 13, 2017

Fuse said:
Uh.. no? Pretty sure you'll be fine. Never heard of oil blowing up engines.

Neither have I, although on amazon there appears to be at least one review blaming specifically the HPS blend as the reason for their engine "blowing up". I was just wondering if the extra zinc will cause me any issues in general, the most catastrophic being engine failure.

Fuse · Mar 13, 2017

I'm sure you can safely ignore that one. Even if it is remotely possible the chance is too small to worry about.

whatdoyoufeedit? · Mar 15, 2017

You should be fine. I've switched to Mobil 1 Full Synth long ago. I doubt the zinc is going to have any negative effect. It will probably help if anything.

MIIPILOT · Mar 20, 2017

The high zinc oils are for mechanical lifter cams. The zinc leaves a slick film on the metal parts and prevents premature wear. the new oils have eliminated the zinc for several reasons. One being pollution and two because the motors now have roller cams and are designed not to need the zinc. The zinc probably won't hurt anything but your mileage slightly and maybe a horsepower or two. I would think it's better to use the high zinc oil than standard motor oil because it should prevent wear better.

Phil@JDM · Mar 30, 2017

high zinc in modern motors is actually very harmful to your oxygen sensors and catalytic converters. Best stuff to use is amsoil signature series. It Last's 25k miles, does not break down like standard petroleum oils and it runs lower temps. www.performancesynthetix.com

s550v6 · Mar 30, 2017

Phil@JDM said:
high zinc in modern motors is actually very harmful to your oxygen sensors and catalytic converters. Best stuff to use is amsoil signature series. It Last's 25k miles, does not break down like standard petroleum oils and it runs lower temps. www.performancesynthetix.com

Does it hurt them enough that I should change out my RP HPS with 1000 miles on it?

N123456 · Mar 30, 2017

Another good one is Penzoil Ultra Platinum Full Synthetic. Made from natural gas, a good amount of people on the forum run it. It runs super clean, Indy guys are even using it.

Optimum Performance · Mar 30, 2017

As Phil stated the Emission Equipment is the reason the warranty could be voided. The low zinc oils have been developed for late model engines. The API ratings of SM/SN will not form deposits on the Cat's. If deposits build up on them and they overheat, during deceleration they will/can get drawn back into the cylinder causing ring failures. Ford has some pretty extensive documentation on these failures so just be aware.

s550v6 · Mar 30, 2017

awesome

thank you guys, looks like i'll get to changing my oil soon

whatdoyoufeedit? · Apr 1, 2017

Likewise, learn something new everyday. Going to go with the natural gas Penzoil Ultra Platninum.

s550v6 · Apr 1, 2017

I'll probably go Redline just because everyone I've read has had great experiences with their oils. I wish RP had an oil with Synerlec and not the ZDDP. Oh well :shrug:

whatdoyoufeedit? · Apr 1, 2017

s550v6 said:
I'll probably go Redline just because everyone I've read has had great experiences with their oils. I wish RP had an oil with Synerlec and not the ZDDP. Oh well :shrug:

FWIW, upon looking at the oil thread in the maintenance section Quaker State Ultimate Durability offers comparable shearing protection to the top-shelf stuff such as Penzoil Ultra Platinum etc. without having to spend extreme coin. I was going to use the Natural Gas Penzoil but the prices have shot up significantly (running $70+ for 6 qts).

I just changed my oil today with the Quaker State Ultimate Durability Fully Synthetic and I think it will be my oil of choice for the duration due to its good scores via independent testing and bang for buck. I am not a fan of going past factory recommended intervals so I did not see why I should spend more on oil for extreme intervals. **Note Quaker State & Penzoil are both owned by Shell so they share stock.

N123456 · Apr 2, 2017

whatdoyoufeedit? said:
FWIW, upon looking at the oil thread in the maintenance section Quaker State Ultimate Durability offers comparable shearing protection to the top-shelf stuff such as Penzoil Ultra Platinum etc. without having to spend extreme coin. I was going to use the Natural Gas Penzoil but the prices have shot up significantly (running $70+ for 6 qts).

I just changed my oil today with the Quaker State Ultimate Durability Fully Synthetic and I think it will be my oil of choice for the duration due to its good scores via independent testing and bang for buck. I am not a fan of going past factory recommended intervals so I did not see why I should spend more on oil for extreme intervals. **Note Quaker State & Penzoil are both owned by Shell so they share stock.

I agree with you. But for reference, next time look on Amazon. I got 6qts for $43. Just did another change with it today because I think the car feels great with it.

Royal Purple HPS vs API-certified

s550v6

Mike

Fuse

Well-Known Member

s550v6

Mike

Fuse

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whatdoyoufeedit?

Well-Known Member

MIIPILOT

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Phil@JDM

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s550v6

Mike

N123456

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Optimum Performance

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s550v6

Mike

whatdoyoufeedit?

Well-Known Member

s550v6

Mike

whatdoyoufeedit?

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N123456

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