Logo
Click forPleasurecraft Marine parts and manuals!
Results 1 to 7 of 7
  1. #1

    Default Correct oil for 2008 PCM 5.7 L 315 HO carb version

    According to my manual proper oil for this engine would be(for above 50 F) SAE 15W-40 GF-4 SM. On the engines oil filler cap only states SAE 15W-40 and SJ. SAE 15W-40 GF-4 SM oil is very hard tofind,as marine grade like quicksilver can not find at all. How different in fact are these engines to mercruiser, that has different requirements? asume its a GM marine block and it has vortec heads, wonder if the heads are somehow different from what GM produces for mercruiser? In any case wonder what oil You are using on these engines ? On PCM home page they only inform in the FAQ sektion like this " When the average temperature is above 50 degrees F., use a good quality SAE 15W-40 "SJ". So can forget about the GF-4 requirements?

    Thanks for any feedback on this

  2. #2

    Default Re: Correct oil for 2008 PCM 5.7 L 315 HO carb version

    Quote Originally Posted by X-SAILOR View Post
    According to my manual proper oil for this engine would be(for above 50 F) SAE 15W-40 GF-4 SM. On the engines oil filler cap only states SAE 15W-40 and SJ. SAE 15W-40 GF-4 SM oil is very hard tofind,as marine grade like quicksilver can not find at all. How different in fact are these engines to mercruiser, that has different requirements? asume its a GM marine block and it has vortec heads, wonder if the heads are somehow different from what GM produces for mercruiser? In any case wonder what oil You are using on these engines ? On PCM home page they only inform in the FAQ sektion like this " When the average temperature is above 50 degrees F., use a good quality SAE 15W-40 "SJ". So can forget about the GF-4 requirements?

    Thanks for any feedback on this
    How about this ? https://www.exxonmobil.com/en/marine...elvac-mx-15w40 . It's 15w-40 an API SM compatible, marine grade. GF-4 maybe not but does it matter?

  3. #3
    Join Date
    Sep 2008
    Location
    Maryland - USA
    Posts
    6,826

    Default Re: Correct oil for 2008 PCM 5.7 L 315 HO carb version

    The GF rating is from ILSAC, and 4 has been replaced by 5....typically, you find it called out but will be covered by "API Certified" starburst symbol...in other words, discount the GF-4 requirements.

    Go for a brand name oil, 15W-40, with an API SJ or better rating....

    finally, don't be surprised if you can only find SM or SN oils; they should both satisfy the SJ 'needs'....

  4. #4

    Default Re: Correct oil for 2008 PCM 5.7 L 315 HO carb version

    Quote Originally Posted by makomark View Post
    The GF rating is from ILSAC, and 4 has been replaced by 5....typically, you find it called out but will be covered by "API Certified" starburst symbol...in other words, discount the GF-4 requirements.

    Go for a brand name oil, 15W-40, with an API SJ or better rating....

    finally, don't be surprised if you can only find SM or SN oils; they should both satisfy the SJ 'needs'....
    Thanks. Most of the15w40 oil seams made for Diesel engines,but noted that MAG1 15w40 mentions also gasoline engines, API SN, so should be fine. So first run of the engine will be done with this oil.

  5. #5
    Join Date
    Dec 2006
    Location
    Chaumont Bay, N.y., USA
    Posts
    5,218

    Default Re: Correct oil for 2008 PCM 5.7 L 315 HO carb version

    Ayuh,.... I run an entire fleet of boats on Shell Rotella T, 15W-50,....

    Never had any sorta oil problem,... just change 'em each season,...
    Any Grease is Better,... Than No grease at All....

  6. #6
    Join Date
    Sep 2010
    Location
    Jersey Shore
    Posts
    4,635

    Default Re: Correct oil for 2008 PCM 5.7 L 315 HO carb version

    Quick silver 25/40 is all you need.
    Chris
    Dockside Marine Services
    Jersey Shore.
    Mercruiser/Mercury Certified
    Let the insanity begin.

  7. #7

    Default Re: Correct oil for 2008 PCM 5.7 L 315 HO carb version

    Quote Originally Posted by Docksidemarineservices View Post
    Quick silver 25/40 is all you need.
    Was thinking the same, as I guess most moving part part of the engine is very much the same as on equivalent Mercruiser's. What i wonder why PCM specify different oil requirements than Mercruiser?

Similar Threads

  1. 351w carb version swap to whole new fuel injected motor
    By threeoaks in forum OMC Sterndrive and Inboard Forum
    Replies: 4
    Last Post: 09-09-2014, 03:08 PM
  2. Correct Carb for 260A
    By jeffnick in forum Volvo Penta Gas Engine Forum
    Replies: 9
    Last Post: 12-26-2011, 12:55 PM
  3. 2008 8 hp 4 stroke cleanign carb
    By fredn56 in forum Nissan Tohatsu Outboard Forum
    Replies: 1
    Last Post: 08-27-2010, 08:08 AM
  4. Correct carb rebuild kit for 57 gl
    By sosahoe in forum Volvo Penta Gas Archive
    Replies: 3
    Last Post: 06-21-2009, 06:48 AM
  5. Correct Carb Jets
    By newt in forum Johnson Evinrude Outboard Archive
    Replies: 2
    Last Post: 04-05-2006, 02:32 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •