Royal purple 0-8w.

Kdw1403 · 01-28-2019, 02:48 PM

They say this oil is a little faster than reg oil. When I put it in can I run it all the time or does it hurt the motor to run this oil all the time? Thanks

J.R. Haddad · 01-28-2019, 06:51 PM

You can do what makes you comfortable, but that is a very thin oil.
Will it make a little more power? For sure. I would save it for heads
up runs when you need a little help, and run something a little
safer for everyday racing. i.e. hot weather, hot lapping, late night
moisture, etc. Just my thoughts. J.R.

FED 387 · 01-28-2019, 06:57 PM

X2!!

Ed Wright · 01-28-2019, 07:35 PM

X3! I know some Pro Stock cars run it all the time. Different deal there.

nhramnl · 01-29-2019, 08:31 AM

X4. For me, just not worth the risk and expense.

JohnRoderick · 01-29-2019, 09:03 AM

http://rehermorrison.com/tech-talk-6...ee-horsepower/

Alan Nyhus · 01-29-2019, 09:09 AM

There's a balance between those thin oils and the rod/main clearances. Clearances that work fine for 'normal' oil viscosity (5w20, 10w30, etc.) can get you into trouble with the lighter viscosity oils. And the clearances needed to run the lighter oils...all the time... can paint you into a corner if you want to use the heavier stuff.

Do your homework and make sure to involve your engine builder. -Al

J.R. Haddad · 01-29-2019, 07:21 PM

Al we have had a few people around here build very tight clearance
engines, some with smaller bearings etc. where they needed to run
thin oil only. Haven't seen one that lasted the race weekend yet, and
for some that was after very long tow. As I mentioned above, thin oil
in a regular clearance type engine is only meant for that one heads
up run that matters. After that, get the regular stuff back in there.
Don't get lazy and leave it in there. J.R.

Ed Wright · 01-29-2019, 09:13 PM

I have shown up where I thought Class would be tough with the zero weight Royal Purple oil already in it. For various reasons, left it in for eliminations. Ran it all weekend. Not crazy about the low oil pressure at a warm idle, but saw Zero other issues.

If you are having to pay someone else to build your engine, you might want to ask them about it. They know your oil pump & bearing clearances.

Rich Biebel · 01-30-2019, 09:04 AM

I once tried RP very thin oil in my Firebird Stocker.

Oil pressure would drop to near zero at low engine rpms...

I Dumped that oil out after 1 race weekend.....and it was no faster than what I was using before.....Mobil 1 10-30 or 5-30.....and oil pressure was always good with the Mobil 1 and it was faster than most other typical oils.....

01-28-2019, 02:48 PM	#1
Kdw1403 Member Join Date: Nov 2016 Posts: 192 Likes: 47 Liked 68 Times in 22 Posts	Royal purple 0-8w. They say this oil is a little faster than reg oil. When I put it in can I run it all the time or does it hurt the motor to run this oil all the time? Thanks

01-28-2019, 06:51 PM	#2
J.R. Haddad Senior Member Join Date: Jun 2012 Posts: 623 Likes: 510 Liked 874 Times in 195 Posts	Re: Royal purple 0-8w. You can do what makes you comfortable, but that is a very thin oil. Will it make a little more power? For sure. I would save it for heads up runs when you need a little help, and run something a little safer for everyday racing. i.e. hot weather, hot lapping, late night moisture, etc. Just my thoughts. J.R.

01-28-2019, 06:57 PM	#3
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,349 Likes: 326 Liked 280 Times in 150 Posts	Re: Royal purple 0-8w. X2!!

01-28-2019, 07:35 PM	#4
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 389 Times in 168 Posts	Re: Royal purple 0-8w. X3! I know some Pro Stock cars run it all the time. Different deal there. __________________ Ed Wright 4156 SS/JA

01-29-2019, 08:31 AM	#5
nhramnl Senior Member Join Date: Feb 2010 Posts: 504 Likes: 7 Liked 352 Times in 82 Posts	Re: Royal purple 0-8w. X4. For me, just not worth the risk and expense.

01-29-2019, 09:03 AM	#6
JohnRoderick Junior Member Join Date: Apr 2011 Posts: 75 Likes: 5 Liked 11 Times in 4 Posts	Re: Royal purple 0-8w. http://rehermorrison.com/tech-talk-6...ee-horsepower/

01-29-2019, 09:09 AM	#7
Alan Nyhus VIP Member Join Date: Dec 2002 Location: Lower Dakota territory Posts: 1,165 Likes: 1,013 Liked 761 Times in 225 Posts	Re: Royal purple 0-8w. There's a balance between those thin oils and the rod/main clearances. Clearances that work fine for 'normal' oil viscosity (5w20, 10w30, etc.) can get you into trouble with the lighter viscosity oils. And the clearances needed to run the lighter oils...all the time... can paint you into a corner if you want to use the heavier stuff. Do your homework and make sure to involve your engine builder. -Al __________________ "That'll never work....."

01-29-2019, 07:21 PM	#8
J.R. Haddad Senior Member Join Date: Jun 2012 Posts: 623 Likes: 510 Liked 874 Times in 195 Posts	Re: Royal purple 0-8w. Al we have had a few people around here build very tight clearance engines, some with smaller bearings etc. where they needed to run thin oil only. Haven't seen one that lasted the race weekend yet, and for some that was after very long tow. As I mentioned above, thin oil in a regular clearance type engine is only meant for that one heads up run that matters. After that, get the regular stuff back in there. Don't get lazy and leave it in there. J.R.

01-29-2019, 09:13 PM	#9
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 389 Times in 168 Posts	Re: Royal purple 0-8w. I have shown up where I thought Class would be tough with the zero weight Royal Purple oil already in it. For various reasons, left it in for eliminations. Ran it all weekend. Not crazy about the low oil pressure at a warm idle, but saw Zero other issues. If you are having to pay someone else to build your engine, you might want to ask them about it. They know your oil pump & bearing clearances. __________________ Ed Wright 4156 SS/JA Last edited by Ed Wright; 01-29-2019 at 09:17 PM.

01-30-2019, 09:04 AM	#10
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,275 Likes: 25 Liked 510 Times in 200 Posts	Re: Royal purple 0-8w. I once tried RP very thin oil in my Firebird Stocker. Oil pressure would drop to near zero at low engine rpms... I Dumped that oil out after 1 race weekend.....and it was no faster than what I was using before.....Mobil 1 10-30 or 5-30.....and oil pressure was always good with the Mobil 1 and it was faster than most other typical oils..... __________________ Rich Biebel S/C 1479