15w40?
15w40?
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
My New Beetle says SH and any weight appropriate for the temperature.
So I will put 15w-40 in during the summer. The main change in SH to SL was the reduction of ZDDP, an anti-wear additive that is hard on cats.
So I will put 15w-40 in during the summer. The main change in SH to SL was the reduction of ZDDP, an anti-wear additive that is hard on cats.
Post Fiend
Joined: Jun 2001
Posts: 5,228
Likes: 5
From: Running Springs CA
Rotella T is API SL rated, use it. The phosphorus limits only apply to ISLAC GF-3, not SL itself. 0W, 5W and 10W are the only grades covered qualify for the "starburst" and GF ratings. 15W is rated for cold cranking down to +5F.
I have used Chevron Delo 15W-40 for years with fantastic results, based on oil analysis and passing smog checks with flying colors. Oil is hard on cats only if you are burning it. Which is better, more burned oil going thru the cats with a lower percentage (1000ppm) of phosphorus, or almost no oil being burned with a slightly higher (1200ppm) phosphorus content?
Jim
I have used Chevron Delo 15W-40 for years with fantastic results, based on oil analysis and passing smog checks with flying colors. Oil is hard on cats only if you are burning it. Which is better, more burned oil going thru the cats with a lower percentage (1000ppm) of phosphorus, or almost no oil being burned with a slightly higher (1200ppm) phosphorus content?
Jim
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Postmaster
Joined: Dec 2003
Posts: 2,659
Likes: 2
From: S/C Texas
I noticed an ash count in desiel oil specs. What that about, its not in regular gasoline oil specs?
http://www.shell-lubricants.com/prod...A%20T%20MG.PDF
http://www.mobil.com/USA-English/Lub...c1300Super.asp
http://www.shell-lubricants.com/prod...A%20T%20MG.PDF
http://www.mobil.com/USA-English/Lub...c1300Super.asp
Last edited by peppy; Feb 12, 2004 at 09:39 PM.
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Post Fiend
Joined: Jun 2001
Posts: 5,228
Likes: 5
From: Running Springs CA
Ash content is important for certain heavy duty engine designs, such as natural gas and two-stroke diesel. That is why it is listed for "fleet" oils that are likely to be used in those applications. Ash content somewhat proportional to the TBN of the oil.
Jim
Jim
Senior User
Joined: Jan 2004
Posts: 167
Likes: 0
From: western ky
my buddy put over 200,000 miles on his 85 f150 4wd in the inline six engine, using fleet 15w40 oils. he put it thru the wringer pulling boats and campers and raising hell otherwise with it. it still runs fine, i might just buy it. he had got rotella from another friend, and i believe we have citgo where i work that i give to him. it helped stop the truck from using oil and slowed the seeping gaskets
Post Fiend
Joined: Jun 2001
Posts: 5,228
Likes: 5
From: Running Springs CA
Originally posted by peppy
What would ash do in order to benifit an engine? My impression would be ash is dirt in the oil? I'm sure its not dirt in the oil. Interested in knowing how ash helps an oil for NG or 2 stroke.
What would ash do in order to benifit an engine? My impression would be ash is dirt in the oil? I'm sure its not dirt in the oil. Interested in knowing how ash helps an oil for NG or 2 stroke.
Jim
Postmaster
Joined: Dec 2003
Posts: 2,659
Likes: 2
From: S/C Texas
Have been a Mobil 1 and Drive Clean user for quite some time. Tomorrow I'm changing my oil, and I'm going with the Mobil Delvac 15w40. Now, do I go with the synthetic or Dino? Most my driving is country roads for 8-12 miles at a time. Rarely do I tow anything or beat it off road. It will surely be hot here in South Texas before my next change. I think Dino, unless Synthetic isnt much more in price. Ofcourse, the Napa/Wix filter.
I thought I would just share in my possible conversion to diesel oil in my gas truck.
I thought I would just share in my possible conversion to diesel oil in my gas truck.
Postmaster
Joined: Dec 2003
Posts: 2,659
Likes: 2
From: S/C Texas
So I've been running 30w for a while. I did do the 15w40 thing. Now it seems I have a little valve train rattle sometimes. Could this oil be too think and not flowing well? I wouldnt think so, but something seems a little odd.