Castrol RS 10W60 , why not?
05-30-2007, 11:48 AM
#31
Race Car
Originally Posted by Ray S
Ok let me try to understand. If your engine "ticks" and you are running one of Porsche recommended oils you should change to 15w50 right away to eliminate the "tick". If your engine "ticks" using 15w50 the noise is obviously from some problem that is not oil related. 
Seems to me (if he were to employ your previous logic) he should try an even higher viscosity. Maybe some 25w70 is in order?
Someone should give it the good old college try......
Seems to me (if he were to employ your previous logic) he should try an even higher viscosity. Maybe some 25w70 is in order?
Someone should give it the good old college try......
Please, enlighten us how a 5W50 oil and a 15W50 oil differ when at temps of 240F+? If the oil flow into the lifters is adequate when the oil temp is 100F, then why would it not be adequate at 240F? If his oil temperature is closer to 300F, he is going to hear valve ticking at times regardless of the oil he uses especially on tight corner tracks.
05-31-2007, 01:07 AM
#32
Ironman 140.6
Rennlist Member
Rennlist Member
Originally Posted by 1999Porsche911
Please, enlighten us how a 5W50 oil and a 15W50 oil differ when at temps of 240F+?
Please enlighten us with your life tests on m96 engines run on Porsche's recommended fills vs. your recommendations.......
Show us your test data that has lead to your conclusions (photo's, test data, anything??). Please share why Porsche experts are wrong in their assertions that VarioCam Plus will not function correctly without the recommended oils. Show us your test data that shows VC + needs the thicker fills you recommend.
Do you have any substantive test data or just a lot of guesses??
05-31-2007, 11:11 AM
#36
Race Car
I have never seen this thread before but to run 60W oil is crazy like the OP asked, the tolerances is too tight to run this thick of oil.
You are getting in the GEAR OIL viscocities, this can not be good for the motor at all. Imagine how long it would take to push the oil throught the entire engine at start-up. The start-up wear would probably be greater.
You are getting in the GEAR OIL viscocities, this can not be good for the motor at all. Imagine how long it would take to push the oil throught the entire engine at start-up. The start-up wear would probably be greater.
05-31-2007, 11:20 AM
#37
Race Car
Originally Posted by Tippy
I have never seen this thread before but to run 60W oil is crazy like the OP asked, the tolerances is too tight to run this thick of oil.
You are getting in the GEAR OIL viscocities, this can not be good for the motor at all. Imagine how long it would take to push the oil throught the entire engine at start-up. The start-up wear would probably be greater.
You are getting in the GEAR OIL viscocities, this can not be good for the motor at all. Imagine how long it would take to push the oil throught the entire engine at start-up. The start-up wear would probably be greater.
05-31-2007, 11:23 AM
#38
Race Car
Originally Posted by 1999Porsche911
Nobody suggested running straight 60 weight oil.
05-31-2007, 11:30 AM
#39
Race Car
Originally Posted by Tippy
True, but 60, that is a little too thick. I could see using this in drag racing engines with loose tolerances but what I have read is the M96 has tighter tolerances for increased efficiency and longevity.
Multiviscosity oil does not work that way. And the "tight tolerances" you speak about...you mean the ones that contribute to the various engine rattles, etc, or are you speaking of the ones that keep the engine from leaking and burning oil?
05-31-2007, 11:40 AM
#41
Race Car
Originally Posted by 1999Porsche911
Multiviscosity oil does not work that way. And the "tight tolerances" you speak about...you mean the ones that contribute to the various engine rattles, etc, or are you speaking of the ones that keep the engine from leaking and burning oil?
So, 10W, as I was taught flows like a straight 10W in the cold climates, the 60 in this case is the actual protection weight or simply 60 weight.
As far as tolerances, I read that the piston/bore relationship and the friction bearing/journal relationships are tighter than ever as Porsche was trying to squeeze every once of longevity from the M96.
05-31-2007, 12:57 PM
#42
Rennlist Member
Guys, run an oil from the approved list and move on....arguing oil with 1999 is a complete waste of time. He will not accept facts and seems to enjoy the dispute a little too much.
05-31-2007, 01:17 PM
#43
Originally Posted by 1999Porsche911
Contrary to the marketing of Mobil, the 0W40 DOES NOT provide for proper lubrication in hotter climates at startup. Open your window and just listen to the tick, tick tick, when you park your car after a good run and let it sit over night. That's the sound of your lifters being void of enough oil after the Mobil water drained out overnight.
Now, change the oil to a 5W50 or 15W50 and listen again.
The viscosity of 40 on the hot side is laughable when your oil temps are running at 230F, 240F, 250F..... But, if you don't plan on keeping the car long, it doesn't matter.
Now, change the oil to a 5W50 or 15W50 and listen again.
The viscosity of 40 on the hot side is laughable when your oil temps are running at 230F, 240F, 250F..... But, if you don't plan on keeping the car long, it doesn't matter.
06-01-2007, 04:29 AM
#44
Instructor
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Darn, I was hoping you guys would give a big thumbs up to the 10W -60 as I have a case of the stuff sitting in my garage left over from the e46 M3. It was their recommended oil for that tall inline 6 engine. I wonder why? (not being sarcastic)
06-01-2007, 08:44 AM
#45
Burning Brakes
Thread Starter
Two of the best specialist on Porsche mechanical in Madrid, told me that they don't like 10W60. They said that it was very good al BMW-M engines.
They recomend always synthetic 5W40 for 996 Carrera, from approved list.
They use Castrol 5W40, and Motul 5W40 EX 8100 not Mobil 1 0W40 , too much thin in warm and hot climates
They recomend always synthetic 5W40 for 996 Carrera, from approved list.
They use Castrol 5W40, and Motul 5W40 EX 8100 not Mobil 1 0W40 , too much thin in warm and hot climates