Royal Purple users.... Read this!
Original Founding Member!
Joined: Jul 1999
Posts: 9,037
Likes: 88
From: Granby, MA
Cruise-In 1, 3, 9. 10 & 11 Veteran
Where headers added onto the car?
What were the conditions before the oil change?
What oil was in it previously and how old was it?
Burning Brakes
Joined: Dec 2004
Posts: 1,149
Likes: 143
I am not sure . It was the first oil change since we had the car for the summer.
Nothing else was changed. I did a bunch of digging and the wheel well tick is pretty common in 4.6 OHC mustangs so I think it will be fine. I may try a different oil next time.
I unplugged each injector one at a time and it didn't effect the noise.
It has long tubes but its not a header leak.
Nothing else was changed. I did a bunch of digging and the wheel well tick is pretty common in 4.6 OHC mustangs so I think it will be fine. I may try a different oil next time.
I unplugged each injector one at a time and it didn't effect the noise.
It has long tubes but its not a header leak.
Former Vendor
Joined: Jan 2008
Posts: 4,202
Likes: 1
From: Greenville SC
Ok, I am not an expert, but I will say this, we are a corvette shop and we sell alot of different Name Brand Fluids Mobil 1, Valvoline, Royal Purple, and Motul. We use different Brands for specific needs unless the customer ask for a specfic Brand only. Here's a list
Brakes-Non Performance--Just use a good Brake Fluid for your Specfic Car.
Brakes-Performance--Motul Dot 4 racing brake fluid (RBF600)
Clutch Fluid-Always Performace--Motul Dot 4 (RBF600)
Note: Motul has a very high wet boiling point, thats whats important
C5 & C6 Stock Short Block Engines--All get Mobil 1 (unless customer wants something different)
C5 & C6 Built Short Block Engines--Get whatever the builder says
C5 & C6 Stock Automatics--Valvoline ATF Dex-Mer III or any equal
C5 & C6 Built Automatics--Royal Purple ATF
C5 & C6 Stock Manuals--Valvoline ATF Dex-Mer III
C5 & C6 Built Manuals--Royal Purple Syncromax
C5 & C6 Stock Diff's--Valvoine 75-90 FULL Synthetic or Mobil FULL Syn
C5 & C6 Built Diff's--Royal Purple 75-90 Full Synthetic
We have a customer that has a 1997 C5 with over 316,000 Miles on a stock never been into LS1!! Mobil 1, Thats pretty good.
This is just our opinion.
Brakes-Non Performance--Just use a good Brake Fluid for your Specfic Car.
Brakes-Performance--Motul Dot 4 racing brake fluid (RBF600)
Clutch Fluid-Always Performace--Motul Dot 4 (RBF600)
Note: Motul has a very high wet boiling point, thats whats important
C5 & C6 Stock Short Block Engines--All get Mobil 1 (unless customer wants something different)
C5 & C6 Built Short Block Engines--Get whatever the builder says
C5 & C6 Stock Automatics--Valvoline ATF Dex-Mer III or any equal
C5 & C6 Built Automatics--Royal Purple ATF
C5 & C6 Stock Manuals--Valvoline ATF Dex-Mer III
C5 & C6 Built Manuals--Royal Purple Syncromax
C5 & C6 Stock Diff's--Valvoine 75-90 FULL Synthetic or Mobil FULL Syn
C5 & C6 Built Diff's--Royal Purple 75-90 Full Synthetic
We have a customer that has a 1997 C5 with over 316,000 Miles on a stock never been into LS1!! Mobil 1, Thats pretty good.
This is just our opinion.
Last edited by Mike Yeager@Eastcoast Performance; Apr 29, 2009 at 11:10 AM.
Original Founding Member!
Joined: Jul 1999
Posts: 9,037
Likes: 88
From: Granby, MA
Cruise-In 1, 3, 9. 10 & 11 Veteran
Ok, I am not an expert, but I will say this, we are a corvette shop and we sell alot of different Name Brand Fluids Mobil 1, Valvoline, Royal Purple, and Motul. We use different Brands for specific needs unless the customer ask for a specfic Brand only. Here's a list
Brakes-Non Performance--Just use a good Brake Fluid for your Specfic Car.
Brakes-Performance--Motul Dot 4 racing brake fluid (RBF600)
Clutch Fluid-Always Performace--Motul Dot 4 (RBF600)
Note: Motul has a very high wet boiling point, thats whats important
C5 & C6 Stock Short Block Engines--All get Mobil 1 (unless customer wants something different)
C5 & C6 Built Short Block Engines--Get whatever the builder says
C5 & C6 Stock Automatics--Valvoline ATF Dex-Mer III or any equal
C5 & C6 Built Automatics--Royal Purple ATF
C5 & C6 Stock Manuals--Valvoline ATF Dex-Mer III
C5 & C6 Built Manuals--Royal Purple Syncromax
C5 & C6 Stock Diff's--Valvoine 75-90 FULL Synthetic or Mobil FULL Syn
C5 & C6 Built Diff's--Royal Purple 75-90 Full Synthetic
We have a customer that has a 1997 C5 with over 316,000 Miles on a stock never been into LS1!! Mobil 1, Thats pretty good.
This is just our opinion.
Brakes-Non Performance--Just use a good Brake Fluid for your Specfic Car.
Brakes-Performance--Motul Dot 4 racing brake fluid (RBF600)
Clutch Fluid-Always Performace--Motul Dot 4 (RBF600)
Note: Motul has a very high wet boiling point, thats whats important
C5 & C6 Stock Short Block Engines--All get Mobil 1 (unless customer wants something different)
C5 & C6 Built Short Block Engines--Get whatever the builder says
C5 & C6 Stock Automatics--Valvoline ATF Dex-Mer III or any equal
C5 & C6 Built Automatics--Royal Purple ATF
C5 & C6 Stock Manuals--Valvoline ATF Dex-Mer III
C5 & C6 Built Manuals--Royal Purple Syncromax
C5 & C6 Stock Diff's--Valvoine 75-90 FULL Synthetic or Mobil FULL Syn
C5 & C6 Built Diff's--Royal Purple 75-90 Full Synthetic
We have a customer that has a 1997 C5 with over 316,000 Miles on a stock never been into LS1!! Mobil 1, Thats pretty good.
This is just our opinion.
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
Drifting
Joined: Mar 2006
Posts: 1,340
Likes: 2
From: ZHills Florida
St. Jude Donor '08
“The challenger’s [BP’s] expert determined a 0.9 percent difference in power between the oils, which did not rise to the level of statistical significance, and is well below the 3 percent claim made by the advertiser.”
So BP's own expert, in a blind comparison, found RP produced .9% more power than Castrol. Not up to RP's claims of 3%, but still, more power.
Using 350 HP as a start, that's 3.15 HP more with RP than Castrol.
405 HP 3.65 HP
505 HP 4.55 HP
I'll keep using RP.
Last edited by burbleflyer; Apr 29, 2009 at 01:59 PM.
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Advanced
Joined: Oct 2006
Posts: 52
Likes: 0
Amsoil is what I have recently switched over too, after Mobil 1 was found to be garbage and even RP didn't cut the mustard. My hot oil pressure is up and my temps are down and my valvetrain noise is much reduced. I could not ask for more from an oil!
Former Vendor
Joined: Jan 2008
Posts: 4,202
Likes: 1
From: Greenville SC
Drifting
Joined: Jul 2006
Posts: 1,564
Likes: 4
From: Brookfield Wisconsin
