rpmhigh

I AM ABOUT TO CHANGE THE DIFFERENTIAL OIL FROM MY S2K AND I WAS WONDERING IF ANYONE TRIED ROYAL PURPLE SYNTHETIC OIL 75W90 IN THEIR CAR. I WORKED IN AUTOZONE AND I CAN BUY THEM AT A GREAT DISCOUNT. PLEASE LET ME KNOW

sillyboybmxer

we are suppose to use 75w-110 or 75w-140 now as the SAE ratings changed. i suppose you would be ok but i stick to the recommended things(up to date recommended i should say)

S2K_2003

I use Royal purple in my s2k, Love it

H22toF20

I run Royal Purple in my Prelude and plan on running it in the motor, tranny and diff on my AP1, here soon.

ans2k

hum i have it in my diff. i cant really tell a difference from stock but seems fine to me so far. and i know another member that is using it as well.

ans2k

see if u can get mobile 1 in a discount.

takeshi

I recommend turning the caps lock off.

No first hand experience with RP but what I've read on their fluids isn't impressive (except for the marketing materials). It looks to be a fine fluid and is may end up being decently priced if you're getting a significant discount.

CharlesAP2K

I have done extensive research on oil/lubes... Royal Purple is all hype. The 3rd party viscosity test show it to protect less than some dino oils! Yeah, that's what I said. I run Amsoil in my Engine and Diff. Amsoil was the pioneers of the synthetic oil world. Their 3rd party testing shows it FAR above the competition. And Mobil1, Ha, not even as good as Dino Valvoline. A great looking bottle and tons of marketing can get you so far, but do the research. Royal Purple is the most overpriced, low quality oil I've researched. I'd look into Amsoil if I were you. It's a $20 per year membership fee and you can buy it for $6.30 a quart. Not to mention they guarantee protection for 15,000 miles of severe condition driving!

PM me if you'd like to get more info on it.

BowlofRice

If the new weight is correct the FAQ should be updated to reflect this.

prancer

Have any data? I have been running Royal Purple for several years - in my civic and now in my S (only engine oil), and I have always loved it. I have also only seen positive tests with Royal Purple (which i realize can be biased or "set up"). But, from my own experiences, here are some observations that make me believe it is good.

1. My friend generally sends his oil off to Blackstone. He uses Royal Purple in his S, and has never had any poor data from the samplings, and they often show he still has 5-10k oil life left.

2. When I used it in my civic, I saw a decrease in metal shaving from the magnetic drain bolt after using RP for a while, compared to what shavings I would accumulate with other oils I was using.

3. Not too long ago, I pulled the valve cover and cams to do my AP2 retainers. Oil looked good up in the head, and would move with silky smoothness (this would be 1500 miles after my last oil change)

I realize this isn't the best data in the world - I am just trying to explain why I think RP is good rather than saying "because it is expensive, and people say it is".

But, i have been contemplating on switching to Amsoil. So if you have some information explaining why/how Amsoil is better than RP, it would be helpful and much appreciated.