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 > 911 / 930 Turbo & Super Charging Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,726
Thinking of Rotella T6, thoughts?

Been running Valvoline VR-1 forever, but have read too much oil pressure in most turbos is not recommended (straight from OEM turbo literature). At cold start, my gauge pegs and stays there for quite awhile; clearly over max recommendation for idle pressures.

Maybe a 40 weight would be better? My only concern is Texas gets really hot.

Diesel oil, yay or nay?
Old 05-23-2014, 05:24 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Driver
 
Noah930's Avatar
 
Join Date: May 2005
Location: Los Angeles
Posts: 13,975
Garage
I'm not sure if there's a Rotella good for our cars, anymore. Last time I looked, I couldn't find anything I was happy with regarding viscosity and zinc levels. Chevron Delo is OK, though.
__________________
1987 Venetian Blue (really looks like grey) 930 Coupe

Last edited by Noah930; 05-24-2014 at 10:07 AM..
Old 05-24-2014, 09:58 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Brando
 
quattrorunner's Avatar
 
Join Date: May 2006
Location: Las vegas
Posts: 6,000
Garage
I've been using it because I thought it was up to standard zinc needs but now not sure. My engine leaks so much I can't feel good about mobile vtwin prices.
Old 05-24-2014, 10:51 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Jul 2006
Location: S. Florida
Posts: 7,289
Quote:
Originally Posted by Tippy View Post
Been running Valvoline VR-1 forever, but have read too much oil pressure in most turbos is not recommended (straight from OEM turbo literature). At cold start, my gauge pegs and stays there for quite awhile; clearly over max recommendation for idle pressures.

Maybe a 40 weight would be better? My only concern is Texas gets really hot.

Diesel oil, yay or nay?
I use 20w50 VR-1 in Florida and the gauge doesn't peg on cold starts. It doesn't in winter when it's 40 to 50 degrees out either.
Sounds like the oil pressure relief valve is stuck on yours.

Get under the motor and remove the threaded plug for it in the bottom of the case slowly and the spring and valve piston will slide out or it might take one of those skinny magnets you can buy to reach in there any pull it out so you can inspect it.

It's possible it got stuck at TDC in it's cylinder so it isn't being pushed down compressing the spring by oil pressure to where oil can pass out holes in the side of it's cylinder.
Sometimes people put washers or a 6mm nut inside the piston to shim up the spring tension to raise oil pressure a little. If you find any in there try removing them and see how it works.
Old 05-24-2014, 11:44 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,726
It always pegged gauge and I rebuilt the engine awhile back. Everything was smooth, don't think it's sticking.

Hmmm.

My oil pressure gets down to 1.2-1.5 bar at idle when it's over say 100 degrees out. That I'm not liking, but I know it shouldn't really be an issue as there's no load. Just hate thinking a 50 weight being so low.
Old 05-24-2014, 11:47 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Join Date: Jul 2009
Location: Ontario
Posts: 1,821
Quote:
Originally Posted by Tippy View Post
It always pegged gauge and I rebuilt the engine awhile back. Everything was smooth, don't think it's sticking.

Hmmm.

My oil pressure gets down to 1.2-1.5 bar at idle when it's over say 100 degrees out. That I'm not liking, but I know it shouldn't really be an issue as there's no load. Just hate thinking a 50 weight being so low.
Hi Tippy, my newly rebuilt engine used to peg also with Bradd Pen 20/50. This year I started using Shell Rotella 15/40 and the guage is back to normal, or should I say it reads as when the stock engine configuration was in the car. The Rotella being 1/2 the price is also a bonus. Philip
__________________
87 930 GHL/Rarlyl8/Garretson/GT3582R/1 Bar/Wevo shift, mounts/Meth inj/LM-2/Custom Fuchs/Carrera intake manifold/Xtreme Carrera heads P&P/3.4/DR 993SS cams/ Mahl/Pauter/JE/Niresist/ARP/twin COP/8.25:1/KEP stage 2/twin tials/close 2,3,4th. MS3Pro Evo 500+ HP, BTSOMP Dyno
Old 05-24-2014, 12:03 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,726
I may give this stuff a try unless someone tells me I'm being stupid for doing so....
Old 05-24-2014, 12:06 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
xbmwguy's Avatar
 
Join Date: Apr 2008
Location: west palm beach fla
Posts: 1,649
Garage
I've been running it for a while now. I change oil every 2 k or so.
Old 05-24-2014, 12:14 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
16Volt's Avatar
 
Join Date: Oct 2013
Location: Seattle, WA
Posts: 990
Not that its much of an endorsement but Subie guys swear by the stuff.
__________________
- 86 Porsche 930 - Mr.Hyde
- 86 BMW 635CSi - Dr.Jeykell
- 2006 Infiniti M45 Sport
https://medium.com/@crashingdoor
Old 05-24-2014, 12:16 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
IMR-Merlin's Avatar
 
Join Date: Oct 2010
Location: Southern NH
Posts: 3,680
The only T6 that I have seen is 5w40
Old 05-24-2014, 12:28 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,726
Quote:
I've been running it for a while now. I change oil every 2 k or so.
You change 8+ qts every 2k miles?!?! Holy moly.
Old 05-24-2014, 12:44 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered User
 
Join Date: Jul 2009
Location: Ontario
Posts: 1,821
Quote:
Originally Posted by IMR-Merlin View Post
The only T6 that I have seen is 5w40
Sorry, I didn`t read the heading! I run Dino. Philip
__________________
87 930 GHL/Rarlyl8/Garretson/GT3582R/1 Bar/Wevo shift, mounts/Meth inj/LM-2/Custom Fuchs/Carrera intake manifold/Xtreme Carrera heads P&P/3.4/DR 993SS cams/ Mahl/Pauter/JE/Niresist/ARP/twin COP/8.25:1/KEP stage 2/twin tials/close 2,3,4th. MS3Pro Evo 500+ HP, BTSOMP Dyno
Old 05-24-2014, 12:52 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,726
Happy with the dino? I'm going T6 for the turbos sake.
Old 05-24-2014, 01:49 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
Join Date: Jul 2009
Location: Ontario
Posts: 1,821
Quote:
Originally Posted by Tippy View Post
Happy with the dino? I'm going T6 for the turbos sake.
I have no issues with the Dino, and never have used synthetic. My oil return goes to the crankcase vent/not the oil tank. I believe yours goes to your oil sump? Any way, I've never had a coking issue. Philip
__________________
87 930 GHL/Rarlyl8/Garretson/GT3582R/1 Bar/Wevo shift, mounts/Meth inj/LM-2/Custom Fuchs/Carrera intake manifold/Xtreme Carrera heads P&P/3.4/DR 993SS cams/ Mahl/Pauter/JE/Niresist/ARP/twin COP/8.25:1/KEP stage 2/twin tials/close 2,3,4th. MS3Pro Evo 500+ HP, BTSOMP Dyno
Old 05-24-2014, 03:37 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Rocket Scientist
 
Join Date: Jun 2008
Location: Detroit
Posts: 908
philip j, you have changed your turbo two times that I know of. They are not on your car long enough to coke!
Old 05-24-2014, 04:10 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Rocket Scientist
 
Join Date: Jun 2008
Location: Detroit
Posts: 908
What's the point? Mobil 1 and Rotella T6 have about the same ZDDP, and the diesel oil does not have the high rev anti foming additives as an automotive oil.
Old 05-24-2014, 04:15 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,726
So anti foaming is the only additive missing?
Old 05-24-2014, 04:30 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
Registered User
 
Mike80911's Avatar
 
Join Date: Oct 2010
Location: New York Where only a criminal can have a gun
Posts: 1,656
Garage
Sorry nothing to add about good or bad with Rotella. But I was reading that Porsche now offers their own brand of oil for older 911's Has anyone tried that yet?
__________________
86 930 Grand Prix White
04 Cayenne
1970 Chevy Nova SS
Old 05-24-2014, 04:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
Registered User
 
Join Date: Jul 2009
Location: Ontario
Posts: 1,821
Quote:
Originally Posted by Speedy Squirrel View Post
philip j, you have changed your turbo two times that I know of. They are not on your car long enough to coke!
HA! HA! 4 turbos in 5 years, I think the GT35R is here for a while! or maybe I should have gone with the T-4 after all !!! The winters are long here above the 49th.
__________________
87 930 GHL/Rarlyl8/Garretson/GT3582R/1 Bar/Wevo shift, mounts/Meth inj/LM-2/Custom Fuchs/Carrera intake manifold/Xtreme Carrera heads P&P/3.4/DR 993SS cams/ Mahl/Pauter/JE/Niresist/ARP/twin COP/8.25:1/KEP stage 2/twin tials/close 2,3,4th. MS3Pro Evo 500+ HP, BTSOMP Dyno
Old 05-24-2014, 04:44 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #19 (permalink)
Registered User
 
Join Date: Mar 2012
Location: NC
Posts: 1,235
20w-50 Valvoline VR1 or Kendal GT1 is all I have ever ran.
__________________
Cheers,
Patrick
'78 930 #441
'87 951
Old 05-25-2014, 07:13 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 08:21 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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.