has any one used royal purple motor oil yet. i was at pepboys today cause i need an oil change and i was looking at it. i know the guy on powerblock in spike TV always use it. any one have in first person info on royal purple. oh and does K&N make a high flow oil filter for our cars.

 

I have Royal Purple in my car. I noticed a significant increase in my mpg when I switched from regular motor oil.

 

did you use the 5W-30. so now that some one has seen gain in mpg i am most deff. going to get it

 

I can't remember what weight I used. I still have a quart in my garage. I'll check when I get home. I'd say I easily gained 2mpg if not more.

 

I use both royal purple and mobile 1. both are really good, RP=$$ though, and i can get mobile 1 pretty cheap.

 

royal purple is a waste of money in my opinion. Ive used it before and didnt really notice anything. I rather use mobile 1 personally cuz i get it cheap but its up to you if you wanna pay an extra 1 or 2 for something thats pretty much the same as a good pure synthetic oil.

 

Where the hell are you guys getting Mobil 1 cheap? The prices I've seen for RP are not much more than I find M1 going for around here.

 

i tried.. Mobile 1, Motul, Redline, RP..... i can't tell any different between them. far as i know.. Mobile 1 turn black the fastest.

 

now that I use royal purple my palms don't sweat, I'm a faster runner and my dog dosn't hump my leg anymore.

I hump his.

 

RP was no different in price than M1 for me. I got it from Summit Racing since I live right up the road from them. And since I am seeing a difference from the regular oil I had before it's NOT a waste a money for me.

 

wallmart sells a 5 quart jug of mobil 1 syn for 20 bucks

 

ugh,,, Wal-Mart

 

i work for a dealership so i get it for free. hehehe.

 

Damn I thought this stuff was for cars... It won't make me hump my pillow though right? Last thing I need is for my head to be stuck to my pillow when I wake up in the morning.

 

Royal Purple contains more molybdenum than Mobile 1 (a good thing). Royal Purple also has a slightly better additive package (a matter of opinion, but that's what most chemists will tell you). Both oils are simular in composition (polyalphaolefin). Red Line is a little more complex. It is more ester based and is therefore thicker. Red Line also contains a boatload of molybdenum. All provide simular levels of protection. I'm actively pursueing a degree from Texas A&M for mechanical & petroleum engineering. A&M is rank #1 worldwide for P.E.

Anyone that says all oils are the same is an idiot. A 6% gain in gas mileage is not uncommon for vehicles on synthetics. It also reduces engine wear in about 50-60 different ways. If you change your oil at the scheduled intervals (7,500 miles), you will have saved yourself an entire tank of gas at the rate of 6%. The added expendature of the oil will be off set. Even more so with today's gas prices.

BTW, there is no need to change synthetic fluids at 3,000 miles. Change the filter at the half way point to 7,500 (which would be 3,750). Everything else will be fine.

P.S.
I also have RP manual tranny fluid. I consistantly get 30-35 mpg on the freeway, and 22-28 in what I consider city. I am by no means a slow driver. I redline atleast once on a daily basis.

Castrol Syntec (in America) is not actually synthetic. I advise no one buy it when true synthetic Mobile 1 is the same price.