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Registered
Join Date: Nov 2008
Location: Provo, UT
Posts: 234
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Correct motor oil
I know this is the wrong category, but I need a quick answer and there's only two people viewing the 356 forum and almost two hundred here... anyway, I need to know what the best motor oil is to use with my 912. I just finished the rebuild, and I've heard that I'm not supposed to use just regular 30w oil, it has to have zinc or something.. can anyone enlighten me? sorry for the dumb out of place question!
Last edited by tb912; 05-06-2009 at 07:21 PM.. |
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05-06-2009, 06:44 PM
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Registered
Join Date: Oct 2005
Location: Martinez, CA
Posts: 356
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Boy you know how to open up a can of worms.....
The theory goes that oils with more zinc phosphate are good for older engines, I believe Castrol syntec 20W50 has a lot of zinc phosphate in it?
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1997 Boxster SOLD 1999 R1100S SOLD 1988 Carrera 3.2 |
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05-06-2009, 07:03 PM
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Regis turd ab user
Join Date: Dec 2006
Location: Tacomatose, Wa USA
Posts: 1,489
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05-06-2009, 07:08 PM
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Air Cooled Addict
Join Date: Aug 2007
Location: Brandon, FL
Posts: 272
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Hey tb,
No worries, friend. No such thing as a dumb question. Especially when it comes to something as important as oil. I'm no expert in the matter, but I share your concern on ZDDP levels in oil. From what I've found doing searches, it seems Brad Penn is the one of the better oils to go with. But you'll find that you will have to order it from specialty suppliers. Not sure if our host carries it. Just today I found another manufacturer that claims to have pretty high Zn and P levels. Company name is CenPeCo (Central Petroleum Company) and I had never heard of them. I found that 20w50 Castrol GTX High Mileage has a fair amount of ZDDP additives and just purchased some for my baby's next transfusion. There are many threads in the 911 Tech forums, so take a peek there and get ready to do LOTS of reading. And by the way, I missed out on getting a cherry '76 912 back in 1990. Can't recall what was wrong with it, but they only wanted 4k for it. Happy driving!
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Joe V '84 Schwartz 911 Carrera 3.2 '91 Specialized S-Works M2 - Gone but not forgotten '12 Trek X-Cal : American Classic - XT brakes/shifters/derailleurs - carbon goodies '13 Trek Madone 5.2 stockish |
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05-06-2009, 07:12 PM
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Quote:
Any experience and/or proof that Swepco 502 oil improver with any decent dino oil (will lower levels of ZDDP) is just as protective as BP or Swepco oil? Brian
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1989 Carrera 3.2 Silver Anniversary Edition 2007 BMW 750Li 2005 Honda Odyssey EX-L http://forums.pelicanparts.com/porsche-911-technical-forum/285064-new-member-have-pics.html |
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05-06-2009, 07:44 PM
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911 User
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oil
Brad Penn
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'84 Carrera 3.4-280hp '75 914 2.0 85hp '60 BMW R69-34hp '49 VW Bug-25hp |
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05-07-2009, 06:33 AM
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Jupiter 911
Join Date: Sep 2007
Location: Jupiter Fl
Posts: 663
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Brand Penn, 20-50w
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Lenny-1987 3.2 Targa Guards Red/SW Chip Fabspeed Exhaust/Cat bypass MSDS Inc. intake/Clewetts Euro pistons and cylinders. 2002 Boxster Artic Silver/Wifes ride. |
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05-07-2009, 06:44 AM
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Registered
Join Date: Jan 2004
Location: Pittsford, NY
Posts: 3,702
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http://www.lnengineering.com/
Read over the 'Lubricants" section on Charles' site. I think with your 4 cylinder push rod engine, you might have better luck using 20-50 Harley Davidson air cooled oil as it has a good amount of the zddp as well and is more readily available. Plus, you are not buying 9 or 10 qts at a time like us 911 drivers.
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Tony G 2000 Boxster S |
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05-07-2009, 06:49 AM
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Registered
Join Date: Jan 2003
Location: Dublin, CA
Posts: 6,281
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"Let the games begin..."
Why not go to your local WallyMart and pick up a gallon jug of Shell Rotella T HD 15W-40 oil API Service CJ-4/SM oil for less than $9? According to the Shell website (www.rotella.com), it typically contains about 1200 ppm zinc and 1100 ppm phosphorous as manufactured. Confirming this, a Blackstone Lab testing of unused Rotella T 15W40 CJ-4 done on 11/08 indicated the following content: Zinc 1208 PPM Phosphorus 989 PPM Calcium 3065 PPM Boron 35 PPM
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Sergio The GT Lid Whisperer PCA 42yrs - National DE Instructor / Ex-RGruppe #197 '19 718 Cayman S (9th Porsche/1st with PDK) '14 Subaru Forester XT (Porsche support vehicle) |
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05-07-2009, 07:52 AM
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muck-raker
Join Date: Jan 2009
Location: Coastal PNW
Posts: 3,059
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In case you haven't viewed it yet, this is the thread that you will eventually be led to. Have a six-pack, a box of wine or a pot of coffee ready when you open it.
Ultimate Motor Oil Thread or Why we hate CJ4/SM oils
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STONE '88 Cabriolet, using EP Slick 20w50 partial synthetic Snake Oil...just as Rommel intended.  Deny Everything; Admit Nothing; and Always Make Counter-accusations 
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05-07-2009, 01:21 PM
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