Royal Purple

[La Bestia]

You used to hear about Royal Purple all the time and how it was the best but now it seems like the market has majorly shifted in favor of AMSOIL. Just wondering if Royal Purple still offers a top quality product. I can get Royal Purple for significantly cheaper than AMSOIL's advertised prices (haven't checked if they actually sell at advertised prices or not), in fact a local source has Royal Purple slightly cheaper than Mobil 1. If it's still up there I figure I will pull the trigger on it when it comes time for the first oil change. If not I will keep shopping.

P.S. what happened to Red Line, used to hear about them a lot too but nobody talks about them anymore. Maybe because it's so expensive

 

[Bigredmariner]

I still hear about Red Line, never used it or Royal Purple myself. Advertising is expensive so they probably keep it to a minimum.

 

[Shanks12]

I guess you could ask our local AMSOIL Rep about that... I'm sure Nick could give some comparisons between them..

 

[merlin5577]

Royal Purple is a good brand and is good choice for your truck. If you can get it cheap, go for it!

 

[PenguinLTZ]

Royal Purple is a good brand and is good choice for your truck. If you can get it cheap, go for it!

Robert did they ever get the GM spec approval?

 

[merlin5577]

Royal Purple is a good brand and is good choice for your truck. If you can get it cheap, go for it!

Robert did they ever get the GM spec approval?

No clue. But they are API certified across the board for the appropriate applications.

 

[Carolinaboy]

I haven't seen too much from them recently

 

[vansdonk]

I have used RP in my LR's tranny, transfer case, diffs, etc. I haven't had any problems. But from the studies that are done: http://www.enhancedsyntheticoil.com/Royal_Purple_vs_AMSOIL.htm It doesn't hold up as well as Amsoil. I only use this in the '04 Rover. It isn't safe to use with real rubber seals/gaskets/etc in the old ones.

 

[merlin5577]

I have used RP in my LR's tranny, transfer case, diffs, etc. I haven't had any problems. But from the studies that are done: http://www.enhancedsyntheticoil.com/Royal_Purple_vs_AMSOIL.htm It doesn't hold up as well as Amsoil. I only use this in the '04 Rover. It isn't safe to use with real rubber seals/gaskets/etc in the old ones.

I dont want to start a pissing contest but I can tell you this. Any study paid for or sponsored by a company is going to be swayed in that companies favor, period. I'm not saying Amsoil is bad, BUT, if you check the API website, the only oils of theirs API certified are the XL line up which almost no one uses, and it is not what is used in these comparisons.

If you check most car & truck owners manuals, it will say something to the extent of; use only API certified XXX (CI-4, CJ-4, etc...) of an appropriate weight and grade... blah blah blah.

All of Royal Purples oils (not counting the race only ones) are API certifed. The oils Amsoil brags about, are NOT API certified. That being said, its your vehicle to do with as you wish.

 

[PenguinLTZ]

Royal Purple is a good brand and is good choice for your truck. If you can get it cheap, go for it!

Robert did they ever get the GM spec approval?

No clue. But they are API certified across the board for the appropriate applications.

Right, I was just curious. I knew it was good stuff, and I did run it a bit in the '07. Just always found it odd that RP never made GMs list.