Royal Purple 31520 HPS 5W-20 High Performance Street Synthetic Motor Oil with Synerlec - 1 Quart Bottle

This Royal Purple oil is straight fire! Has a premium feel, great protection, and it works like a champ under load. I used it in my Mustang and it smooths out the engine, quiets the noise, and holds up strong even in heat. No sludge or breakdown. If you want a smarter oil that works as hard as your ride, this is it. No oil leaks, and is fully synthetic. No burning smell. It’s not cheap but worth the money for sure!

I use it in my 1973 Ford f250 360CI. Runs noticeably quieter and very smooth compared to your average conventional oil. I would say this is great stuff for older engines with flat-tappets. I messaged Royal Purple and asked what they recommended for an older car and this is the stuff. Lots of Zinc and Phosphorous/ZDDP substitute for the older technology. It also has an extremely high viscosity index, out of any oil I've seen, so you know it will perform great in those temp extremes as well, hot and cold. At about 11 bucks a quart if you buy in bulk, it's also hard to beat the price when comparing to Amsoil or Redline, although those would be great choices as well. Comparing other options, Amsoil is a bit thinner than this and offers a little bit better cold weather performance and longevity, but is pretty expensive. Redline is nice because you know what they put in it, no secrets with them--very high quality group 5 ingredients. It's also the most robust, and probably offers the greatest protection in extreme operation. Don't necessarily know what they put in the HPS, though I imagine it's a high quality group 4/5 ester/PAO base, either that or its got a pretty beastly additive package to perform the way it does. Mobil is another obvious option and is probably the best all-rounder for your newer cars, though some of these "boutique" oils I've mentioned offer more specific things if you need them. Overall, I think this one wins the comparison for price and if you don't change the oil every 20,000 miles. Personally, I wouldn't wait that long on any vehicle. Maybe 10,000 at the most in an engine that is perfectly sound.

High performance oil. The name says it all. I know it is not under warranty for any dealership. But let me tell you. This is the good stuff. Period. I been using for two years now that I'm running AutoX.

Well packed and quick delivery considering where I shipped it to { Nowhere Montana ;-) }. Exactly what we were looking for and nobody carries it locally. A quality product from a reputable company. Worth every penny for just a bit more engine protection on a hard working pickup truck.

Excellent synthetic oil! Use it in my 140 Suzuki four stroke outboard. Oil was delivered on time as indicated.

Best oil on the market it’s very comparable to what my vehicle calls for and then some great value for the money I get even better gas mileage when I use it royal purple let’s go. I wouldn’t have any other way.

This stuff is amazing! I didn't know a different brand of oil would make such a noticeable difference. I have an 07 and 2012 GM truck with an LV8 and an LC9 engine respectively. They both have a quarter million miles on them. This oil made a noticeable difference in the sound the engines make and delivery of power. Quieter and smoother running. I'm sold. Not using anything else anymore.

If you are familiar with automobiles and engines you will know that the rotary engine can be a weird animal. The oil system is extremely important due to the fact that it is getting injected into the "cylinders" or rotors when the engine is running regularly. I was very hesitant about putting an all synthetic oil into my engine because of mixed ideas about oil with the Renesis engine. Not to mention the owner's manual says its a bad idea but every specialized oil for rotaries from Japan is synthetic. I have over 144K on my engine and want to extend the life of the engine before I have to rebuild the apex and side housing seals. I had some worries about synthetic oils because of deposits which can kill a rotary engine. I wanted to make sure whatever I was putting in would burn off clean and keep my apex seals, the life of the engine, in tact. I have used one full 12 quart box of this oil and what I have to say about the product when it comes to rotaries is that it seems to do very well. I haven't had to use as much oil as when I was using Pennzoil standard oil. Usually when using my old brand I had to be psycho about monitoring the oil level. This stuff seems to go a bit further and the burn off doesn't have much smell at all. When you hit 9RPMS with the Renesis engine you can typically smell an oil burn off which is still present with this but not as severe. The engine sounds like its running quieter but that could just be my imagination. I have to give props to the Royal Purple team that included information on their website about Rotary engines and their relation to Royal Purple they are what sold me on it. I will continue using this product even if it is more expensive. I love my car and keeping its heart(engine) alive is a very big deal to me. If you're wondering, the product really is purple.

A bit painful customer experience, however, the oil is a good product.

Perfetto per motori diesel preparati 😎

粘度が高くてもサラサラしていてフリクションロスが少ない様に感じます。

アウディA7で使用。5000kmは知ってOILが減っていたので購入しました。そろそろOIL交換です。

Danke