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Oil Change.............Mobil 1?

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Old 07-02-2008, 03:16 PM
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RyanPerrella
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point is that there is NO 15-40 or 20-50 M1 so there is no discussion.

The correct weight is 15-50 over say 10-30 or 10-40 M1.
Old 07-02-2008, 03:19 PM
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hinchcliffe
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Let me quailify why I use Rotella then. When I used 15w-50 Mobil I had more oil loss on track days then I had with Amsoil 20w-50 or Rotella 5w-40. Not sure why (no leaks), but none the less. I also ran at about 1.5-2 bar when hot with Mobil 15w-50. With the other two I run at about 2.5-3 bar when hot. My experience only. But yes Mobil 15w-50 is perfectly fine especially since M1 does not offer 20w-50 or 15w-40. YMMV
Old 07-02-2008, 03:38 PM
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sjfarbs
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Originally Posted by RyanPerrella
hey you noobs

the question was asking wether or not the OP had the correct weight M1 oil for their car. I don't think it asked for a roll call of everyone's personal oil choices.

Is there a smiley that conveys "NOT ANOTHER OIL THREAD!" Andrew, do you have a smiley like that? If so post it for me please
Originally Posted by RyanPerrella
point is that there is NO 15-40 or 20-50 M1 so there is no discussion.

The correct weight is 15-50 over say 10-30 or 10-40 M1.
Right, my bad.............not M1 15/40, I meant to type 10/40, whoops...........
Old 07-02-2008, 03:45 PM
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Mike Frye
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Old 07-02-2008, 06:42 PM
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JP Rodkey
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What the heck......I switched from M1 years ago and my noisy lifter problems all went away. Won't use Pennzoil nohow noway due to paraffin content.
Old 07-02-2008, 06:48 PM
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Tampa 928s
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Let me quailify why I use Rotella:

Is that not Diesel oil?
Old 07-02-2008, 06:58 PM
  #22  
hacker-pschorr
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Originally Posted by Tampa 928s
Let me quailify why I use Rotella:

Is that not Diesel oil?
Are you thinking of Delvac?

What it boils down to is SJ / SL rating over SM.
Most diesel & 4-stroke motorcycle oil still use the older (higher ZDDP content) formula.
All current production car oil will be SM (catalytic converter friendly).

This is why many people lean towards AMSoil, Redline, Royal Purple etc... They sell "non certified" oil that is the old rating. Read the label.

Todd runs dyno oil from Lubrication Engineers.

I've found on a few "other" forums, many engine builders are suggesting run whatever oil you want and dump in a bottle of STP oil treatement (blue bottle). It's bascially a high dose of ZDDP.
Old 07-02-2008, 07:02 PM
  #23  
mark kibort
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101 racing days on Amsoil 20-50 and always at near 5 bar at 2000rpm +
I saw similar results with Redline, but low oil pressure at track temps with Mobil 1. thats all I know

mk
Old 07-02-2008, 07:23 PM
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heinrich
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Nice job Mark YAY!!!!! Dude ... finally
Old 07-02-2008, 07:26 PM
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Fogey1
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More than you ever wanted to know?

https://rennlist.com/forums/search.php?searchid=2986056
Old 07-02-2008, 07:39 PM
  #26  
Mike B
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Originally Posted by hinchcliffe
5w-40 Shell Rotella........
+1
Old 07-02-2008, 08:19 PM
  #27  
morganabowen
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Mobile 1 15/50 5 quart jug at Wal-Mart= $21.48
Old 07-02-2008, 09:19 PM
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Mitch Johnson
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I've run on 20/50 exclusively in the past, but am giving the M1 15/50 a look see this time around.

I believe any quality synthetic at xx/50 is a good choice unless you run it in the cold winters
Old 07-02-2008, 09:33 PM
  #29  
928autobahndreamer
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If you are not doing serious track work, no one can argue that Mobil 1 15-50 is not a good choice.
Old 07-02-2008, 10:44 PM
  #30  
GeorgeM
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What it boils down to is SJ / SL rating over SM.
Most diesel & 4-stroke motorcycle oil still use the older (higher ZDDP content) formula.
All current production car oil will be SM (catalytic converter friendly).

This is why many people lean towards AMSoil, Redline, Royal Purple etc... They sell "non certified" oil that is the old rating. Read the label.
That's why I use Brad Penn.


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