Lack of Lube

[ALLSPEED]

I have a 1999 996 3.4 6spd. I notice that when I start my engine for the first time of the day there is small vibration from lack of oil. It makes my rear license plate rattle and then it's fine. This only happens after it has been sitting overnight and on the first start for maybe half a second. It's fine the rest of the day and I'm sure it's lack of lubrication on start up. I am using Mobile 1 5-40 and plan to switch to Syntec 5-40. Is there any cure for this as it's not real bad but the thought of metal to metal for any length of time bothers me? Also out of curiosity does anyone know why they don't sell Castrol Edge 5-40 in the U.S.? I believe it is listed as approved Porsche oil but not available in America. Any help appreciated. Thanks, Robert. P.S.- I change my oil every 3,000 miles and it happens fresh or dirty.

Edited July 8, 2010 by ALLSPEED

[JFP in PA]

I have a 1999 996 3.4 6spd. I notice that when I start my engine for the first time of the day there is small vibration from lack of oil. It makes my rear license plate rattle and then it's fine. This only happens after it has been sitting overnight and on the first start for maybe half a second. It's fine the rest of the day and I'm sure it's lack of lubrication on start up. I am using Mobile 1 5-40 and plan to switch to Syntec 5-40. Is there any cure for this as it's not real bad but the thought of metal to metal for any length of time bothers me? Also out of curiosity does anyone know why they don't sell Castrol Edge 5-40 in the U.S.? I believe it is listed as approved Porsche oil but not available in America. Any help appreciated. Thanks, Robert. P.S.- I change my oil every 3,000 miles and it happens fresh or dirty.

Considering where you live, go the Castrol Syntec 10W-40, you just might be surprised at the difference.............

Castrol currently only offer the Edge in North America in 5w and 10W-30 weights; it also does not offer the Edge Sport products here either, and currently had not plans to introduce it according to my Castrol rep.......

Edited July 8, 2010 by JFP in PA

[ALLSPEED]

DO you think 5-40 is just too thin? What do you think about a 10-40 or 10-50? Thanks for replying as I haven't bought oil yet. Thanks,Robert

[Dharn55]

All cars don't have oil pressure when they first start up (actually there are systems to pre-pressurize the oiling systems, but they are rather exotic). And it is normal for a car to be a little rougher until it is fully started. If you look at the oil pressure gauge you will see that it takes a second or two to register pressure. On older 996's the chain tensioners can leak down more and take a few seconds to pump up, this is one reason that you may have some roughness and/or hear a little chain rattle on start up. You can replace the tensioners with the new/updated tensioners which may reduce this somewhat.

[JFP in PA]

DO you think 5-40 is just too thin? What do you think about a 10-40 or 10-50? Thanks for replying as I haven't bought oil yet. Thanks,Robert

I think that the brand of oil you have been using is known to have lousy film strengths, dismal ability to hold up under shear and temperatures, and often shows TBN values indicating it's toast in as little as 3,000 miles of easy driving. The 10w-40 Syntec is just the opposite, holding up well for much longer. Give it a try.....

Edited July 8, 2010 by JFP in PA

[Loren]

Here is the oil you need ;) (sorry couldn't resist)

Yes, this is real and it is about $30 for 3 liters (in Japan).

[ALLSPEED]

I think I'll try the 10-40 Syntec for now. I do notice either a breakdown of viscosity or dilution of gas in oil after about 2500 miles from watching the oil pressure gauge. We will see if there is a difference in the Syntec. By the way I have 72000 miles. I could not find Hello Kitty @ Auto Zone so could you tell me the shipping,Loren. L.O.L. On the real side, thanks for the input guys. JFP your always trying to help guts out so I think I will give out my first point to you. Now if my engine blows............

[JFP in PA]

I think I'll try the 10-40 Syntec for now. I do notice either a breakdown of viscosity or dilution of gas in oil after about 2500 miles from watching the oil pressure gauge. We will see if there is a difference in the Syntec. By the way I have 72000 miles. I could not find Hello Kitty @ Auto Zone so could you tell me the shipping,Loren. L.O.L. On the real side, thanks for the input guys. JFP your always trying to help guts out so I think I will give out my first point to you. Now if my engine blows............

If your engine blows with a quality 10W-40 in it, no oil was going to be able to help it.............. And, by-the-by, Syntec 10W-40 holds ACEA A3, B3, B4; and the B4 specifically addresses its ability to hold up under high temp/high shear with fuel dilution conditions.....

Edited July 9, 2010 by JFP in PA