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Oil change

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I am wanting to change the oil in my Porsche but don`t know which to go for[&:] ie,semi or full synthetic oil, is there a favourite one that people are running their 3.2` s on,also I noticed that when I checked my oil level im getting an emulsified substance at the filler neck,is this normal or should I be worried [:(]


Neil fox,84 3.2 Carrera

67CB5799054C45F797AF0ADE9B464294.jpg
 
Foxy I run my SC on fully synthetic Castrol Magnatec, I think it's a superb oil . Remeber that with a synthetic oil you may use slightly more. If you have moisture or deposits around the oil filler neck you should take the car on a good long run and get some real heat into it , the deposits will dissapear, maybe in winter driving you are not getting up to operating temperature often enough.
 
Ideally, you should have a regular maintenance programme for your 911 to ensure that all the various fluids, lubricants and other consumables are checked/changed at the corresct periodic intervals. This 'service history' will maintain the car in optimum condition and protect its re-sale value. Depending on mileage, an engine oil change every 6000 miles (or one p.a.) should suffice.

Can't comment on the white substance. Might be nothing. Being air-cooled it can't be coolant emusifying in the oil.

On older cars the very low (cold) viscosity synthetic oils are not recommended. When left standing they can seek out and create leaks. Castrol GTX Magnatec (15w/40w I think) would be pretty good.
 
Make sure that you DO NOT USE 10-40 as described in the owners guide.

You must use 15-40 or thicker.

Regards

Phil
 
Foxy

Are you doing a lot of short journeys? The white goo could conceivably be oil mixed with condensation build up from short journey operation.
 
Bones

A bit to early to tell if consumption or performance has changed, but I do now get the characteristic puff of oil smoke when starting from cold (i.e. car left overnight or longer).

Why do you ask?

Sideways
 
I might be totally imagining things but if you own a car for a while you become very sensitised to the engine's performance , (for instance it's easy to feel that the performance of my SC varies to some degree depending on atmospheric conditions) well after filling up for the first time with Magnatec I thought I detected that the engine pulled a little better. Seems unlikely and it could have been the weather on the day but as the oil is apparently 'magnetised' to the components it could be possible on a well used engine like mine that there was better ring to bore sealing occuring or the oil was lighter and offered less resistance to the moving parts. That's what I felt, however it could have been my wallet justifying the extra cost. I've got the engine out at the moment and whilst I had a leak from the gearbox I have replaced (in which I had Castrol Magnatec gearbox oil, trying Swepco now) the engine is bone dry.
 
I cannot imagine a change of oil making a detectable difference to performance. It is probably psychological.

Mobil 1 for example is a very good oil, but its widespread use in performance cars is purely down to a massively successful global marketing campaign. Mobil 1 is also available, more cheaply, branded as a Comma product, but many people would prefer to pay more to pour it out of a Mobil container.
 
I think it's Comma SynerG/Z (or might be Comma Motorsport). It was Caterham who told me. The factory were servicing my Superlight and I asked them to use Mobil 1. They laughed, and expained that many mainstream oils were sold under different brand names, but customers still preferred the brand they recognised, even if it cost more.
 
i have an 84 3.2 and use mobile 1 or shell helix fully synthetic. i had the car serviced last year by northway and they use semi synthetic .
seems just as good. i read an artical someplace that you are more likely to have oil leakes with fully syn.

can't say i have noticed any diffrence

steve
 
Official stance from an OPC is Semi Synthetic 15-40, I used Castrol Magnatec 15-40 and it actually cured a slight knocking too!!!
 
Hi
10l is correct, there are lots of threads that have run previoulsy over what oil to use, I use Shell Helix and have had no probs (or leaks).
Re How to? I would also recomend a copy if the Bentley manual, amazon/ebay etc
Good luck with the car, any pix yet?
Cheers

Adam
 
I agree about getting lots of books. Even a cheap Haynes will help you.

You could get the car warm.
Drain the tank.
Drain the engine.
Change the oil filter.
Refit both drain plugs, preferably with new washers.
Fill with 10L of the oil you chose (I too use shell helix but also add a ZDDP additive).
Start engine and when hot (not warm) check oil level with engine running to get it just over halfway between the two marks. I do very little miles but drive on a track, if you do lots of miles and only drive on the road then you could fill to just below the max mark.
Add extra oil if needed while the engine is off.
 
Yeah, Nathan is rtght the more books the better, however the Bentley manual is prob the best all-rounder and great starting point - tho not cheap!.
But also worth a look are 911 Perrformance handbook (by Anderson) and 101 Projects for your 911 (by Dempsey) both publisged in the Motorbooks workshop series numbers 209 & 115.
cheers
 
I normally need a touch more than 10l to get the level midway, so I tend to buy 15 litres and whatever is left over can be used for topping up until the next change. Also adviseable to buy a larger 15-20 litre drainage pan as the old washing up bowl isn't quite big enough.
 
Other than checking the oil level an oil change is just like any other car, you don't need a Bentley to do that.

I have a version of the Bentley as a PDF, its 280mb. You can download from here, you can then check it out if its any use to you before you buy the item itself
http://www.adrive.com/public/d64682ad2c7671b9b598015c83bbca717ae526602084853fb4f2a2a379abd633.html
 
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