View Poll Results: What synthetic oil do you use
Mobil 1
45
75.00%
Mobil 1 Extended performance
6
10.00%
I can't answer because I use another brand
9
15.00%
Voters: 60. You may not vote on this poll
Mobil 1 or Mobil extended performance
01-11-2011, 08:59 PM
#1
Drifting
Thread Starter
Mobil 1 or Mobil extended performance
Do you guys run Mobil 1 or Mobil 1 extended performance?
I was thinking of switching to the extended performance.
Anyone know if it's made with the same base stock group of oil?
They say extended performance has got more super syn,if super syn is petrolium base,that means less synthetic oil.
I'm only looking for input from Mobil 1 users.I'm not going to change to Royal purple,Amsoil,Redline ,ect.
Thanks
I was thinking of switching to the extended performance.
Anyone know if it's made with the same base stock group of oil?
They say extended performance has got more super syn,if super syn is petrolium base,that means less synthetic oil.
I'm only looking for input from Mobil 1 users.I'm not going to change to Royal purple,Amsoil,Redline ,ect.
Thanks
Last edited by tblt44; 01-11-2011 at 09:17 PM.
01-11-2011, 09:17 PM
#3
Safety Car
The interesting thing about the EP variation is that it doesn't meet one of GM's specs (GM 4718M (Corvette spec))....even though it does, they just never submitted it for testing. The regular M1 does, however.
My 2008 C6 calls for the regular version with the 4718 spec, but the owner's video on the CD that came with the car shows them using the 'gold top' EP jug during the service section of the video...secret hint??? possibly.
Anyhow, I found that the service interval with the oil change life algorithm was in the 5k-6k mile range so I just used the regular, cheaper 5w-30.
My 2008 C6 calls for the regular version with the 4718 spec, but the owner's video on the CD that came with the car shows them using the 'gold top' EP jug during the service section of the video...secret hint??? possibly.
Anyhow, I found that the service interval with the oil change life algorithm was in the 5k-6k mile range so I just used the regular, cheaper 5w-30.
01-11-2011, 11:24 PM
#5
Safety Car
01-13-2011, 08:09 PM
#15
Le Mans Master
Member Since: Oct 2004
Location: South-central Missouri
Posts: 6,314
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I had an oil-related failure on a flat-tappet SBC in a 69 Corvette. That got me looking at oil types ... a LOT!
In a nut shell...
In order to extend the life of catalytic converters, the EPA mandated the reduction of the amounts of zinc and phosphorus used in oils. However, without these (and similar) packages, the friction at high-pressure contacts (like cam lobes against flat tappets) was significantly compromised.
This reduction in lubricity, coupled with the need for better fuel economy, lead to the use of roller tappets and Corvette engines received them in the mid to late 80s. Mobil 1 is compatible with roller tappets, and oils with added "zddp", such as perhaps the EP Mobil product are not necessary (especially if changed often), and can shorten the life expectancy of the catalytic converters
Bottom line (as I have come to learn it):
Flat tappet motors will benefit from oils with ZDDP and/or other packages in them. (I'm familiar with Amsoil, and AMO 10-40 has the "good stuff" in it that motors like my flat-tappet LT5 needed back then. And, there are several more out there now with the same "good stuff" in it for similar applications.) Roller tappet motors can benefit from the API "SM" (the most recent rating spec) oils as they are less expensive than the special stuff, and promote fuel economy and long catalytic converter life.
FWIW,
P.
In a nut shell...
In order to extend the life of catalytic converters, the EPA mandated the reduction of the amounts of zinc and phosphorus used in oils. However, without these (and similar) packages, the friction at high-pressure contacts (like cam lobes against flat tappets) was significantly compromised.
This reduction in lubricity, coupled with the need for better fuel economy, lead to the use of roller tappets and Corvette engines received them in the mid to late 80s. Mobil 1 is compatible with roller tappets, and oils with added "zddp", such as perhaps the EP Mobil product are not necessary (especially if changed often), and can shorten the life expectancy of the catalytic converters
Bottom line (as I have come to learn it):
Flat tappet motors will benefit from oils with ZDDP and/or other packages in them. (I'm familiar with Amsoil, and AMO 10-40 has the "good stuff" in it that motors like my flat-tappet LT5 needed back then. And, there are several more out there now with the same "good stuff" in it for similar applications.) Roller tappet motors can benefit from the API "SM" (the most recent rating spec) oils as they are less expensive than the special stuff, and promote fuel economy and long catalytic converter life.
FWIW,
P.
01-13-2011, 08:32 PM
#17
Drifting
Thread Starter
I had an oil-related failure on a flat-tappet SBC in a 69 Corvette. That got me looking at oil types ... a LOT!
In a nut shell...
In order to extend the life of catalytic converters, the EPA mandated the reduction of the amounts of zinc and phosphorus used in oils. However, without these (and similar) packages, the friction at high-pressure contacts (like cam lobes against flat tappets) was significantly compromised.
This reduction in lubricity, coupled with the need for better fuel economy, lead to the use of roller tappets and Corvette engines received them in the mid to late 80s. Mobil 1 is compatible with roller tappets, and oils with added "zddp", such as perhaps the EP Mobil product are not necessary (especially if changed often), and can shorten the life expectancy of the catalytic converters
Bottom line (as I have come to learn it):
Flat tappet motors will benefit from oils with ZDDP and/or other packages in them. (I'm familiar with Amsoil, and AMO 10-40 has the "good stuff" in it that motors like my flat-tappet LT5 needed back then. And, there are several more out there now with the same "good stuff" in it for similar applications.) Roller tappet motors can benefit from the API "SM" (the most recent rating spec) oils as they are less expensive than the special stuff, and promote fuel economy and long catalytic converter life.
FWIW,
P.
In a nut shell...
In order to extend the life of catalytic converters, the EPA mandated the reduction of the amounts of zinc and phosphorus used in oils. However, without these (and similar) packages, the friction at high-pressure contacts (like cam lobes against flat tappets) was significantly compromised.
This reduction in lubricity, coupled with the need for better fuel economy, lead to the use of roller tappets and Corvette engines received them in the mid to late 80s. Mobil 1 is compatible with roller tappets, and oils with added "zddp", such as perhaps the EP Mobil product are not necessary (especially if changed often), and can shorten the life expectancy of the catalytic converters
Bottom line (as I have come to learn it):
Flat tappet motors will benefit from oils with ZDDP and/or other packages in them. (I'm familiar with Amsoil, and AMO 10-40 has the "good stuff" in it that motors like my flat-tappet LT5 needed back then. And, there are several more out there now with the same "good stuff" in it for similar applications.) Roller tappet motors can benefit from the API "SM" (the most recent rating spec) oils as they are less expensive than the special stuff, and promote fuel economy and long catalytic converter life.
FWIW,
P.
01-15-2011, 09:46 AM
#18
Premium Supporting Vendor
All diesel oils are allowed more phosphorus than current API SN gasoline motor oils. The current API SN spec allows 800 ppm phosphorus. The current diesel API CJ-4 spec allows 1200 ppm. But, as mentioned above, by tblt44, there are gasoline oils such as the AMSOIL 10w40 (AMO) he mentioned that have even higher levels of ZDDP and the proper levels of detergents and dispersants for a gasoline engine (as opposed to those needed for a diesel).
For the OP, I personally believe the EP is the better oil, but a tough decision as mentioned above because Mobil 1 doesn't list it for GM4718M.
For the OP, I personally believe the EP is the better oil, but a tough decision as mentioned above because Mobil 1 doesn't list it for GM4718M.
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C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Ordering Information (Retail sales using reference #1206638 benefit the forum.)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
AMSOIL Catalog
