ok well ive had royal purple 5w-20 since 4-18-03 and now its 11-10-03

roughly 7 months and about 8000 miles

the car has been in 105 degree weather to 50 degree weather since and i have had

ZERO problems

plan on changing the oil next week

sidemarker

 

Zero problems but you really won't be able to tell how good it is until you send it out or performa a sample check on it. I could probably leave dino oil in there for 15K miles with "zero problems" but the problems will show later in the long run.

 

Sup Bro,
So where did you get the oil from? How much was it? And is it fully synthetic oil?

 

I use this stuff as well but change it around 7500 miles...I get mine from a local motorsport place that builds race and drag cars. It's about $35 for 6 quarts...

The guys there tested it themselves (for whatever that is worth) and claim it gave them between 2-5hp on race motors and ran about 20 degreees cooler on average than Mobil 1...

I use it because someone had a thread on it about 7 or 8 months ago and espoused the stuff. It's only a little more than Mobil 1, so I'm just being different...

 

you can purchase it at NAPA or most motorsport speed shops should have them

sidemarker

 

the purpose of this thread was to give an update for those who were reluctant to switch to 5w-20. The car runs just as smooth as the first day i put the oil in.

sample check would be a good indication of how well the oil is maintaining its viscoisity but does anyone know where i can send it out too and how??

sidemarker

 

Blackstone Laboratories is where I go to have my oil analyzed. It takes about a week after you drop the sample in the mail. Email Blackstone Lab (bstone@blackstone-labs.com) or call (260) 744-2380 for a free mailing kit for sending your sample in.

Important: Blackstone will give you the raw numbers, but you should ask for the "Dyson Analysis Package and Code #46" in the comments section of the paperwork you send in with the sample. They will automatically send the sample results to Terry Dyson for an in depth analysis of what each of the numbers mean from Blackstone's analysis.

I wouldn't go any other way than Terry's final analysis. He invites questions if you have any after you get his results.

The total cost is $35 and you can have it charged to a credit card. I believe the mailing cost of the oil sample to Blackstone is $1.52.

Go to http://bobistheoilguy.com/terry.html for info on Terry Dyson.

 

i use mobile one, i was thinkin about makin the switch

 

Darrinb
I use royal purple 5-20w I think it help.

John

 

The claims for increased HP are true BUT the additive package that makes it so is questionable if it holds up after a couple of thousand miles. The only test would be to dino test yourcar before adding new (royal)to baseline, dino test when new then dino test after 7k miles.. Have some new oil and 7k oil sent to lab for analysis and compare with each other. Remember most race engines are rebuilt after a few 100 miles and new oil is always put back in. Also they like to change trans oil and rear end oil with race oil and then show the composite of all the HP gains.

Most of our street cars are not race cars. I need my syn oil to last 10k miles which it does.

Also the claims for using 5w20 is just corporate BS,,
http://www.desertsundirectsales.com/ford5w20.htm

 

I know we've disagreed before, but I agree with this statement. The only way you'll prove long term gains claimed would be to do this test, which I also don't think is relevant to a street driven car.

Of course after forking out the money for the oil analysis, and dynometer tests, I'd be asking myself, 'is this really worth it?'

 

Because of the brainwashing advertising, I just get sucked into buying and using synthetic rather than shelling out $$$ to test it...

 

I was referring specifically to HP gains, not just that it's a decent product.

...but I do understand your

 

Here you go
http://royalpurple.com/techrp/summary.html

http://royalpurple.com/video/video.html

 

I have read these before but what is missing is the spec from the analysis ,, also what you'll find is most "true" synthetics will have the same "%" results,,, What I like to do is compare synthetics against each other not against petro oil,,, think of it like comparing diamonds,,, there are different grades, all are very good, just one is always better Street driven cars can go 10k on synthetics, I have proven it by analysis.

 

Anyone seen a website that has independent comparisons of Royal Purple, Amsoil and Mobil 1?? I like what I see with RP, but would like a third party opinion...

TIA

Jim