What fluids are you using in your Monty?

[89mitsuraider]

Royal Purple is just really expensive! I am trying to find something that is just as good, but cheaper. I put Chevron Supreme 5w30 in for now, and it seems good. I want to stick with a synthetic though since the head was rebuilt. I am searching for oils people have used, and had good luck with...

[off-roader]

Only problem w/ royal purple? Not API rated.

[89mitsuraider]

Royal Purple is API rated now. Their HPS stuff is not though. That is the Hi-Performance Street oil. It is loaded with ZDDP, and some other stuff.

[off-roader]

Royal Purple is API rated now. Their HPS stuff is not though. That is the Hi-Performance Street oil. It is loaded with ZDDP, and some other stuff.

My understanding is their marketing says they exceed the specifications however there is no API logo on the bottles which indicate they're not API approved/certified. Do you have an API certification logo on your bottles or RP? They may have begun having their oils certified since I learned that.
Should look something like the below.
API_donut.gif

[89mitsuraider]

When I checked last it had the Starburst on the front and all. I will double check. When I called them about a week ago, they stated, that it met the new criteria. The HPS version is the only one that does not still.

[off-roader]

Good to hear that they finally got their API certification. For being such an expensive motor oil, you would expect it to be.

[89mitsuraider]

Has the donut on the back and all. Fully API certified. Still a really expensive oil though