Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 911 Technical Forum


Reply
 
LinkBack Thread Tools Rating: Thread Rating: 2 votes, 1.00 average.
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Jan 2001
Posts: 696
Oil choice (20W-50): Castrol GTX or Valvoline VR1?

Which would you choose and why?
Old 06-09-2006, 09:35 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Banned for Life
 
RSBob's Avatar
 
Join Date: Jan 2003
Location: "Apple Maggot Quarantine Area', WA.
Posts: 5,306
Garage
Kendal GT1 20-50 - but not readily available off the shelf. Mobil 1 is good stuff but not with older motors.

Between your choices - its a pure toss-up.
__________________
Rick S, '71 914 3.0, '82 911SC EFI, R Gruppe #309
Old 06-09-2006, 09:47 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Brando
 
quattrorunner's Avatar
 
Join Date: May 2006
Location: Las vegas
Posts: 5,914
Garage
So what is good for older motors?
__________________
Turbo powa!
1977 911s. it's cool
Old 06-09-2006, 09:49 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
randywebb's Avatar
 
Join Date: Nov 2004
Location: Greater Metropolitan Nimrod, Oregun
Posts: 10,043
Some have said the Castrol is bad stuff. I'm about to get off of it - cold turkey...

Get the V if that is the only choice you have. Otherwise, do what RSBob said.
__________________
"A man with his priorities so far out of whack doesn't deserve such a fine automobile."

- Ferris Bueller's Day Off
Old 06-09-2006, 11:31 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,969
You cannot go wrong with Kendall GT-1 20w-50 or Valvoline VR-1 20w-50. Personally speaking, I'd not use Castrol GTX in anything.

Be aware that since the EPA mandated 100K catalytic converter life, this forced some MAJOR changes in oil chemistries. The oil companies were forced to reduce and/or eliminate the critical EP additives (ZDDP, sulfur and phosphorus) that significantly reduce camshaft, rocker arm, and ring wear since these compounds contaminated and reduced cat life.

We've been seeing a LOT more rocker arm and cam wear issues so now we use some oil additives to replace those all-important EP chemicals that protect these parts.

Do your homework and you'll find some appropriate products for these cars to aleviate these problems.
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 06-10-2006, 01:43 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
rfuerst911sc's Avatar
 
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 6,274
Shell Rotella is a good oil.
__________________
2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser.
Old 06-10-2006, 02:59 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
Oh Haha's Avatar
 
Join Date: Oct 2003
Location: Michigan
Posts: 14,096
What's wrong with Castrol 20/50? I've been using in Castrol in all of my vehicles and haven't had any problems.
__________________
1981 911SC ROW SOLD - JULY 2015
Pacific Blue

Wayne
Old 06-10-2006, 05:53 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
Join Date: Oct 2001
Location: Ripon, CA
Posts: 227
I have to agree with Wayne. I've used Castrol 10-30 in my pickup truck, and am now at 220,000 miles without even the valve covers removed. How bad can it be?
__________________
Bob,
59 A coupe
67 911S
04 R1150RS
Old 06-10-2006, 06:22 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
iamchappy's Avatar
 
Join Date: Feb 2003
Location: Minnetonka, MN
Posts: 1,450
Garage
Ive read recently that Kendals formula was only good because of the boron value and it's ability to pull out heat from the bearings that Castrol and Valvoline were the best:
Porsche recomends oil with 0.14% Zn and 0.14% P content which Kendal dosent have, I have two cases of Kendal now sitting gathering dust . After my new rebuilt engine breaks in I am switching to Royal Purple.
__________________

914 6 Turbo twinplug 3.12
87 924S
Lexus SC400
Lexus LS400
Old 06-10-2006, 07:10 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
Join Date: Aug 2005
Location: Columbia Gorge, Oregon
Posts: 32
So Steve, what additives are you refering to? I'd like to start doing my homework...I'm assuming not STP.
__________________
1986 911 Carrera 3.2 Coupe
1969 911 T (sold)
1970 914 my first P car (sold)

Life Has Its Rewards
Old 06-10-2006, 07:21 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Forced Induction Junkie
 
WERK I's Avatar
 
Join Date: Jan 2003
Location: Wisconsin
Posts: 3,291
Garage
I've been using the Castrol Syntec and Syntec Blend on my Audi and 930 with absolutely no problems. The pricing on these oils is far more attractive than the Mobil 1 oils. I do agree with Steve R on the GTX oil. It seemed to break down very quickly in terms of viscosity.
__________________
Dave
'85 930 Factory Special Wishes Flachbau
Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P
Old 06-10-2006, 07:38 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered User
 
kach22i's Avatar
 
Join Date: Mar 2004
Location: Michigan
Posts: 44,898
Garage
Is Valvoline VR-1 20w-50 a synthetic oil?

The Valvoline website does not say it is, but some people in other forums seem to think it is.

Is it one of those 50/50 blends?
__________________
1977 911S Targa 2.7L (CIS) Silver/Black
1998 Chevy S-10 4x4 Pick-Up Truck, Razzle Dazzle Camo
1989 modified Scat II HP Hovercraft
George, Architect
Old 06-10-2006, 07:56 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
Registered User
 
Oh Haha's Avatar
 
Join Date: Oct 2003
Location: Michigan
Posts: 14,096
Steve W.,
I am just now testing Lucas oil stabilizer in my SC. Is this an additive you would recommend? I haven't really noticed my difference in temps but my oil pressure IS a bit more than it was with just oil.
__________________
1981 911SC ROW SOLD - JULY 2015
Pacific Blue

Wayne
Old 06-10-2006, 08:56 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
Join Date: Jan 2003
Location: Woodland Hills, CA
Posts: 1,342
Ah yes, the oil debate. The statistics. The ingredients. The arguments. Neverending. Whatever.

I run Castrol 20W/50 in both my Porsches. No problems or unusual wear and tear on either of my engines. Both cars have been run at Streets of Willow at 10/10's in over 100 degree heat. And I'll bet I'm the only person on this board using an early 911 as my daily driver.
__________________
Sandy
1969 911E
1970 240Z
Old 06-10-2006, 09:37 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Registered User
 
Join Date: Jun 2001
Location: wichita,kansas
Posts: 1,148
Garage
So now Kendall is NOT the Bruce Anderson recommended favorite,
Whats the New best stuff. Bruce are you out there??

Keith Epperly
87 slant nose turbo look carrera cabriolet
Old 06-10-2006, 09:48 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Registered User
 
Join Date: Jan 2005
Location: Dallas Tx
Posts: 900
Garage
didnt we rehash this last week?

Here is a recap of last weeks discussion.

We all agreed that the Lucas was good stuff and no one ever had anything bad to say about it and IT DID lower engine temps and allowed the engine to run smoother.
BUT
Some people said that the use of LUCAS with AMSOIL was not needed because it already had additives in it.

CASTROL rated very low against most oils. Now this coming from test sited from the "oil bible". Lots of impurities etc.

Mobile 1 supersyn was good as well as that purple stuff and amsoil.

Valvoline VR-1 Racing Syn rated a 769
Castro syntec blend (the highest rated castrol oil) rated a 653
the GTX rated a 625

The highest rated 20/50 oil synthetic was "76 lubricants/nascar synthetic - 786
While the top editors pick was "Mobil 1 v-twin" rated at 773

The highest rated blend was Valvoline Durablend rated at 690

the highest rated pure oil was "precision 102P" rated at 721
While the editor top pick for pure was Citgo Citgard 500 rated at 703.

The editor based his picks on various criteria for oils.

personally I use the Castro GTX with the Lucas and have had great results with the lucas and what it does....I run 3 quarts in my 14 quart system....I love it..
But I will change out the Castro on my next oil change and use a better oil.
__________________
Signature Phrase " CATCH ME IF YOU CAN"
1988 Porsche 930 "Squerly" Built by "Porsche Doc"
--------------------------
1974 Porsche 911 (2003 - 2012)
2000 Boxster S (2006 - 2008)
Old 06-10-2006, 10:12 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Registered User
 
BReyes's Avatar
 
Join Date: Feb 2005
Location: Tampa Bay, FL, Treasure Coast, FL USA
Posts: 1,475
Garage
Its been years running Castrol for years. Switched using advice of Dave White, "Its good oil and can get it anywhere".

Regards,
__________________
Bernard
Old 06-10-2006, 10:20 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
Registered User
 
Join Date: Jul 2001
Location: Portland Oregon
Posts: 6,969
Oil is like a religion, one is not going to truly change anyone's mind and that wasn't my intention,...

All I can offer is the result of personal experiences over the past 30+ years, but if someone has had good luck with a particular product, then thats what they should stick with. No harm, no foul,.......LOL.

My points were only twofold: (1) To point out two dino oils that have worked very well for me and (2), make people aware that current changes in oil compositions are making any comparisons with past products somewhat invalid. Things have changed,...

If someone is willing to change their oil every 2K-3K, then you'll have good luck with almost anything; thats THE most important aspect of proper vehicle maintenance.
__________________
Steve Weiner
Rennsport Systems
Portland Oregon
(503) 244-0990
porsche@rennsportsystems.com
www.rennsportsystems.com
Old 06-10-2006, 11:27 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
Registered User
 
randywebb's Avatar
 
Join Date: Nov 2004
Location: Greater Metropolitan Nimrod, Oregun
Posts: 10,043
ZDDP = zinc dialkyl dithiophosphate

It's been a major additive since the 1930s, but has pollution problems. I've seen it described as an anti-wear/friction additive, and as an antioxidant.

My _guess_ re Castrol is that the reputation was achieved long ago, maybe back in the days of castor oil beans or something. Steve sees a lot of engines, so you are getting the benefit of a major set of information -- something much better than a mere car owner's anecdotes, tho less than a full-on statistically designed experiment.

Porsche specs Mobil One for all engines. If worried about leakage just go with a dyno oil that SW gave above.

The only problem is if you simply cannot obtain a given oil.


When the consequences of a bad decision are extreme (like falling thru a cornice and dieing), then cut yourself a nice safety margin (don't go to the edge and look over).

Oil is a lot cheaper than an engine rebuild, so just do the obvious. There is no reason to have endless debate when high quality oils are readily available, even in the backwaters of Wyoming.
__________________
"A man with his priorities so far out of whack doesn't deserve such a fine automobile."

- Ferris Bueller's Day Off
Old 06-10-2006, 11:38 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #19 (permalink)
Registered User
 
Join Date: Feb 2004
Location: UK
Posts: 2,231
I've used Valvoline Racing 20/50 in Classic competition engines for about 10 years without problem.

We used Castrol Product 351 before that which was based on a detergent diesel engine oil CRI 40 but is no longer available.

Tried GTX once and had to change it after about 80 competiton miles as we lost pressure at idle.
Old 06-10-2006, 11:43 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #20 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 10:03 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.