motor oil weight

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  • cbusrehab
    Member
    • May 2008
    • 90
    #1

    motor oil weight

    I have a stock S50 swap and really only drive the car in the summer. I was using mobil 1 0w40 but when I autocross and it's 90+ degrees the lifters tick after 2 to 3 runs. It has never done this while daily driving, or during autox in cooler temps. Figured I should go to a heavier weight since it's about time for an oil change.

    What weight are people using that regularly autox their cars?
    Tags: None
    • Danny
      Moderator
      • Feb 2008
      • 14216
      #2
      I run 10-40 in the winter and 20-50 in the summer.

        Comment

        • Gnarles
          Grease Monkey
          • Dec 2008
          • 342
          #3
          15w-50

            Comment

            • Philo
              Ich esse kleine Kinder
              • Oct 2008
              • 3334
              #4
              10-30 all year round.
              -tim
              Originally posted by Jordan
              I like the stance
              -Coining hip terms since 10/9/03

                Comment

                • Mr Two
                  E30 Addict
                  • Jul 2008
                  • 590
                  #5
                  You're pretty much always going to get lifter tick after hard driving with these motors. Nothing to worry about.

                  I've heard that some of the heavier weight oils can cause issues with vanos. No idea on the validity of that. I'm running 10W40 year round - I don't drive the car much in winter and it stays decently warm here.

                    Comment

                    • MR 325
                      Moderator
                      • Oct 2003
                      • 37828
                      #6
                      I run 20w50, always. (S50)
                      BimmerHeads
                      Classic BMW Specialists
                      Grover Beach, CA
                      www.BimmerHeads.com

                        Comment

                        • Danny
                          Moderator
                          • Feb 2008
                          • 14216
                          #7
                          Dude bro Matt, Samesies.

                            Comment

                            • MR 325
                              Moderator
                              • Oct 2003
                              • 37828
                              #8
                              Originally posted by Danny
                              Dude bro Matt, Samesies.
                              Yeah, I don't run no queer oil. Straight up Valvoline 20w50 holmes.
                              BimmerHeads
                              Classic BMW Specialists
                              Grover Beach, CA
                              www.BimmerHeads.com

                                Comment

                                • Danny
                                  Moderator
                                  • Feb 2008
                                  • 14216
                                  #9
                                  I use Castrol GTX. I hope we can still be friends.

                                    Comment

                                    • matthugie
                                      E30 Mastermind
                                      • Mar 2004
                                      • 1810
                                      #10
                                      There's an entire thread dedicated to oil weight on bf.c, everyone runs something different. I've tried several different weights with no significant change, and currently am using 10w40 iirc.
                                      88 325is - S52 powered

                                      Originally posted by King Arthur
                                      We'll not risk another frontal assault, that rabbit's dynamite!

                                        Comment

                                        • e30s50dan
                                          R3VLimited
                                          • Nov 2008
                                          • 2076
                                          #11
                                          20-50w here...S50
                                          NASA
                                          BMWCCA member
                                          PCA member 25yrs




                                          1991 318IS slick top
                                          1997 M3 sedan
                                          2001 325CI DD

                                          “whoever turns the wheel the least, wins"

                                            Comment

                                            • nrubenstein
                                              No R3VLimiter
                                              • Feb 2009
                                              • 3148
                                              #12
                                              The Castrol 5w50 worked fine for me. Overfill by a quart to reduce ticking.

                                              I'm running the Castrol 0w30 right now. Haven't taken it cone packing yet, but the car seems happier with the lighter oil. (It's LL01 certified.)
                                              2006 GMC Sierra 2500HD 4WD LBZ/Allison
                                              2002 BMW M3 Alpinweiß/Black
                                              1999 323i GTS2 Alpinweiß
                                              1995 M3 Dakargelb/Black                                               - S50B32/S6S420G/3.91
                                              1990 325is Brilliantrot/Tan
                                              1989 M3 Alpinweiß/Black

                                              Hers: 1996 Porsche 911 Turbo Black/Black
                                              Hers: 1988 325iX Coupe Diamantschwartz/Black 5spd

                                              sigpic

                                                Comment

                                                • dude8383
                                                  Forum Sponsor
                                                  • Jan 2005
                                                  • 10387
                                                  #13
                                                  I'm rocking Rotella T6 5w40.

                                                  Works great and its like 29.99 for the 5qts at walmart.
                                                  IG: deniso_nsi Leave me feedback here

                                                    Comment

                                                    • drumad
                                                      E30 Mastermind
                                                      • Aug 2009
                                                      • 1700
                                                      #14
                                                      german castrol syntec 0w30
                                                      2008 335i - n54b30
                                                      1991 318i - m52b28
                                                      1994 fzj80 - LAND CRUSHER

                                                        Comment

                                                        • Fusion
                                                          No R3VLimiter
                                                          • Nov 2009
                                                          • 3658
                                                          #15
                                                          Ambient temperature really isn't an issue. When you track your car, temps can easily rise to over 250°. You should run an oil that can take those temps or think about getting a cooler.
                                                          I run 10w60.

                                                          I recommend looking at the http://en.wikipedia.org/wiki/Viscosity_index
                                                          For example:
                                                          Castrol Edge Forumula RS 10W60 - 174
                                                          Valvoline VR1 10W60 - 168
                                                          Cheapo oil - 119

                                                            Comment

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