Switched to the Mobil 5W-50 today
09-09-2009, 11:29 AM
#34
RL Community Team
Rennlist Member
Rennlist Member
The "quieter engine" observation was made by my next door neighbor, who is 10 years younger than me, a gear head, and a mechanical engineer with a phenomenal sense of hearing who is also a guy who is **** retentive in terms of assessing all things mechanical.
09-09-2009, 12:04 PM
#35
The following users liked this post:
jmrosen (04-28-2023)
09-09-2009, 02:39 PM
#37
Race Director
Got 2 cases of Mobil 1 5w-50 coming in. Mail order.
Even if the stuff arrives today before I leave office I won't have time to dump it in Turbo before I head out later today. Did change oil -- used Mobil 1 0W-40 oil -- Sunday so Turbo's got fresh oil for the 3400+ mile road trip I got planned for it.
When I return I'll change oil to the 5w-50 stuff and see how it goes.
Sincerely,
Macster.
Even if the stuff arrives today before I leave office I won't have time to dump it in Turbo before I head out later today. Did change oil -- used Mobil 1 0W-40 oil -- Sunday so Turbo's got fresh oil for the 3400+ mile road trip I got planned for it.
When I return I'll change oil to the 5w-50 stuff and see how it goes.
Sincerely,
Macster.
09-09-2009, 04:29 PM
#38
Burning Brakes
My hearing is probably getting bad too as Statman suggested above, but my idle is much quieter for sure after putting in the 5W50. Not to mention that with the 110+ degree temps here it has got to be better for the engine. One could argue that in colder temps that it wouldn't help (may even hurt if temps were cold enoguh) but in my situation a 70 weight oil would probably be good. It's Africa Hot!!!
09-09-2009, 09:09 PM
#40
RL Community Team
Rennlist Member
Rennlist Member
funny....read post #11..LOL
Here are the specifics for both "0W" and "5W" oils...
Cold:
Low Temp Viscosity in cP
0W = Cranking Max - 3,250 @ -30C / Pumping Max - 60,000 @ -40C
5W = Cranking Max - 3,500 @ -25C / Pumping Max - 60,000 @ -35C
Here are the specifics for 40 and 50...
High Temp (100C)
40 = 12.5-16.3 cSt
50 = 16.3-21.9 cSt
It appears that at cold temperatures both 0W and 5W perform essentially the same. The benefit of 5W-50 is at the higher temperatures. The Turbo owner's manual specifies that 5W-50 is for use when temperatures are generally higher than 50F. My guess is if someone ran 5W-50 in an area where the average temperature was less than 50F, then the mechanic's comment about Porsche's trouble with lifters at higher viscosity grades might be true.
Kevin highly recommended I run 5W-50 here in Atlanta. That's all I needed to hear...
09-09-2009, 10:15 PM
#43
RL Community Team
Rennlist Member
Rennlist Member
09-10-2009, 10:55 AM
#45
Race Director
The blurb now gives order size is 1 case, 6 quarts. I sent email in pointing out order size not clear.
I ordered two cases the other day. I'm in Tehachapi CA though with the Turbo -- this Turbo thing climbs the hills like they aren't even there! -- and the oil is probably not even sitting back at office yet.
It will be there when I return sometime middle of next week.
Seriously: Heading east on 58 from Bakersfield to Tehachapi last night this car felt like it had some silent rocket boosters attached. And stable through the high speed turns, oh yes, stable, very.
God I love this car!
Sincerely,
Macster.