Antique 1984 Porsche 911

chuckrh1 said:
Brad Penn 20x50 Amazon.com
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I dont see that oil on Porsche's Approved list. Seems they are recommending 5w40. Renntech.org seems to be recommending 15w50. I use 0w40 Mobil 1 diesel in my turbo and have had good luck.
 
That Porsche list is, for legal reasons, not good to go buy, they are covering their(Porsche)

selves For a newer Porsche, 996 and up, the light weight oils are suggested. For a 1984 911

a heavier weight oil is best 15/50 20/50. All new Porsches are shipped with Mobil One as are Corvettes, 0/40 I think.The Brad Penn is a specialty oil designed for Racing but works very well in air cooled Cars.Remember a Porsche holds 12 quarts of oil and the Brad Penn

is about 1/2 the cost of Mobil One and just as good if not better. Most of the Porsche owners I know use Brad Penn in their older Porsches

Renntech tends to be for the newer Porsches, www.pelicanparts and Rennlist.com

are the preferred sites for the older cars. The newer Porsches have different motors so they have different requirements
 
I don't think this needs to be an oil debate thread, but personally, id be more inclined to follow a recommendation from Porsche engineers as opposed to people on forums. If that oil is working for you and others, go for it. Wouldn't that oil be a little thick for winters in NY? That is something is be worried about.





Read a little on rennlist and it seems the oil you recommended is very liked by them on there. Seems very strange they would be suggesting something completely different than the manufacturer recommends. For my 996, it seems that you have to follow the manufacturer to a T or risk smoke on startup and clatter on startup as well as wear at high temperatures. OP, take a look at this thread and you can come to your own conclusions, i'll still stick with the manufacturer though...



What Oil for older air cooled Porches? - Rennlist Discussion Forums
 
Sorry I started the thread as a basis for learning for detailing but with each visit it's started to become a complete restoration project and I thought I would share and also see what the more knowledgeable people thought.



And I looked at the manual and all the grades listed thus far were on it
 
Alexshimshimhae said:
Sorry I started the thread as a basis for learning for detailing but with each visit it's started to become a complete restoration project and I thought I would share and also see what the more knowledgeable people thought.



And I looked at the manual and all the grades listed thus far were on it
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Sorry i came off the way I did, it wasn't intentional. Please, ask more questions!!! :)
 
The main thing to realize is that the 996 has a very different motor than the 1984 911.

The 1984 has NO radiator or water in the motor, all cooling is done by the oil !

If I read correctly, the 996 manual recommends oil change at 15,000 miles...

goes to show the manual is not always best to go by
 
chuckrh1 said:
The main thing to realize is that the 996 has a very different motor than the 1984 911.

The 1984 has NO radiator or water in the motor, all cooling is done by the oil !

If I read correctly, the 996 manual recommends oil change at 15,000 miles...

goes to show the manual is not always best to go by
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I realize that, I also said the approved oil list, not the manual. I would also keep oil in my car for 15K miles if the oil report comes back showing no extra wear and that there are plenty of additives in it!! I change the oil in my wifes Mini Cooper S every 13K miles due to that.



I read that Porsche recommended (previous to 996 motors) 15w50 and 20w50 in the older motors, but has switched to the 0w40 recommendation (in ALL motors) in that it pumps up faster and provides MORE cooling and also is thinner in colder weather and still thick enough when hot to provide the correct protection. But, that is in another thread on Rennlist. Seems to be this is a normal debate and there are many schools of thought. I'll take the millions that Porsche has spent on their research though :)



OP, any new updates on the Porsche? I know we just got slammed with almost 2 feet of snow out here, but it is supposed to get into the 40's this weekend!! I plan on getting my cars all cleaned up if the roads are looking nicer!
 
yea I found this site; found the site a bit confusing to maneuver around--I kind of wish they listed prices or things like that on it.

One by one, we're fixing/swapping out parts to get it as close to brand new as we can.

The signals are being fixed up now--apparently some of them don't work anymore.

Also working on a bunch of things like switches knobs levers etc.

Anyone know of any good dual exhaust setups? Not quite sure how I want to go about this--He wants to work on the exhaust but not sure which way to go with it..
 
Go to Pelican Parts - Porsche Parts & BMW Parts - Automotive Parts and Accessories - Porsche & BMW

M&K exhaust best bang for the buck, pick up a couple of horses and loose some weight.

You can also re-chip the car for more/better performance, again...Pelicanparts.

I'd just get the car up to good running condition then look at upgrades. You sure have the outside looking great ! hows the A/C and heat ? Those are high failure items,especially the blower motors, one in the "smugglers box" in front trunk and the heater motor in the engine compartment.If you have the time to kill and want to look at really good exhausts

Fabspeed: Maxflo Stainless Steel Porsche Exhaust Systems, Ferrari, Lamborghini, Maserati
 
the heater actually works like a charm~! not sure about the a/c though =] thanks for the heads up chuck~!

I plan on hitting it back with a good PO85RD run around and try some #7 glaze with black ccs pad?

but waiting for the weather to get warmer.

I suspect it'll take me and the owner a while to learn the whole greasemonkey business of the car =] but your suggestions are definitely a huge help~!

(btw 1985 model had performance chips?)
 
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