Switched to the Mobil 5W-50 today
10-28-2013, 01:40 AM
#241
I'll see if I can get a better fitting one next time.
10-28-2013, 01:45 AM
#242
10-28-2013, 10:19 AM
#243
Rennlist Member
Most 5w-20 oils do not have the Zinc concentration that the 5w-50 has and other Porsche recommended oils.
James go look up the ZDP oil concerns. They are all over the internet. BTW oils such as 5w- 50 have a base weight of 5 and additives allow it to go to 50 when heated. So when cool the oil lubes with the same properties as a 5w oil.
James go look up the ZDP oil concerns. They are all over the internet. BTW oils such as 5w- 50 have a base weight of 5 and additives allow it to go to 50 when heated. So when cool the oil lubes with the same properties as a 5w oil.
10-28-2013, 01:43 PM
#244
Burning Brakes
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Some interesting reading regarding oil... http://540ratblog.wordpress.com/ "• Thicker oil DOES NOT automatically provide better wear protection than thinner oils. Extensive “dynamic wear testing under load” of dozens and dozens of motor oils, has shown that the base oil and its additive package “as a whole”, is what determines an oil’s wear protection capability, NOT its viscosity. For example, some 5W20 oils have proven to provide OUTSTANDING wear protection, while some 15W50 oils have only been able to provide MODEST wear protection. So, do not run thicker oil under the false assumption that it can provide better wear protection for our engines. • BOTTOM LINE: Thinner oils are better for most engine lubrication needs. 540 RAT U.S. Patent Holder Member SAE (Society of Automotive Engineers)"
Thiner is for cold start up and cold weather. Thicker is for hotter running. This really is a no brainer.
10-28-2013, 02:17 PM
#245
what is comes down to is spec and use of each engine design, combination of bearing tolerances and heat being amongst the primary considerations-the film strength required to protect/support the crank/rods/cam lobes/ etc. from the bearing surfaces...ZDDP helps to provide protection when the film is minimal. In basic terms, higher the oil weight the better the film strength. I personally won't use 0w40 but many have had great success(and is Porsche spec); I personally would only run 5w40/5w50/10w60(hot climate)...currently running/staying with 5w40 Rotella T6.
Cheers,
Cheers,
10-28-2013, 05:32 PM
#246
I am not disputing the M1 5w-50, I just happened to come across this thread while I was looking for oil for my daily driver (HSV GTS 2009) which is equivalent to your Pontiac SS with the 6.2 litre chevy V8 engine. I am considering using the same M1 5w-50 oil even though factory recommends 5w-30, it does get hot here in Summer.
I didn't realize Porsche went from 0-40 to 5-50 oil for the GT2RS which does make sense to me as they would reach much higher engine temperatures due to higher power output.
Yes I always thought thicker oils offer better protection but when you start reading too many threads things start to get a little confusing, like opening a can of worms.
I am sticking with M1 5w-50, thanks for all your help and feedback.
Cheers
James
I didn't realize Porsche went from 0-40 to 5-50 oil for the GT2RS which does make sense to me as they would reach much higher engine temperatures due to higher power output.
Yes I always thought thicker oils offer better protection but when you start reading too many threads things start to get a little confusing, like opening a can of worms.
I am sticking with M1 5w-50, thanks for all your help and feedback.
Cheers
James
10-28-2013, 05:36 PM
#247
Burning Brakes
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I am not disputing the M1 5w-50, I just happened to come across this thread while I was looking for oil for my daily driver (HSV GTS 2009) which is equivalent to your Pontiac SS with the 6.2 litre chevy V8 engine. I am considering using the same M1 5w-50 oil even though factory recommends 5w-30, it does get hot here in Summer. I didn't realize Porsche went from 0-40 to 5-50 oil for the GT2RS which does make sense to me as they would reach much higher engine temperatures due to higher power output. Yes I always thought thicker oils offer better protection but when you start reading too many threads things start to get a little confusing, like opening a can of worms. I am sticking with M1 5w-50, thanks for all your help and feedback. Cheers James
10-28-2013, 06:05 PM
#248
Rennlist Member
Thing to remember is these cars have turbos. Oil is used to keep the turbine wheel bearing cool and free running. Exhaust temps are hotter than any engine will get, and the turbo bearing will get up to or near exhaust temps. So using 5w-50 to me is the way to go!
10-28-2013, 10:20 PM
#249
Got it loud and clear thanks Kevin.
10-28-2013, 10:30 PM
#250
Good to interact with people who share a similar passion, yeah nothing like opening a can of worms...
This was my first P car oil change, actually come to think about it.... my first oil change on any car in at least 15 to 20 years !!!.
My car is all done now thanks to this great forum..
01-14-2014, 07:56 PM
#251
Intermediate
Bringing this back to life. Where are you getting M1 5-50? I've checked Autozone, Advanced Auto and O'Reilly's. None of them list it. I can get M1 0-40, that's not a problem, but was considering stepping up to the 5-50. I don't even see it on the Mobil 1 website, but maybe I am missing something?
01-14-2014, 08:01 PM
#252
Banned
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Never seen it retail in the USA. Seen it at WalMart in Toronto. Amazon has it. As does Petroliance. Great oil.
01-14-2014, 10:36 PM
#254
RL Community Team
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^Yes, the Napa store near me sells it.
01-15-2014, 01:14 AM
#255
None of the auto parts stores around me carry it. Nor can they order it for me. I mail order mine from thelubricantstore.com. Prices are a little higher, about $8 a quart but it saves me from hunting and they deliver it to my door. When they have a little sale I usually order a bunch of cases.