Det & Tru Trac

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Author Message   Perry Ray Miller (Discojunky) New Member Username: Discojunky Post Number: 34 Registered: 03-2003 Posted on Wednesday, December 24, 2003 - 03:41 pm:    I'm putting in a Det & Tru Trac set up on my 98' D1. Should I go with synthtic gear oil? And will any additive work for the limited slip? Auto Zone only carries one brand.   Frank Rafka (Mongosd2) Dweb Lounge Member Username: Mongosd2 Post Number: 230 Registered: 02-2003 Posted on Wednesday, December 24, 2003 - 03:57 pm:    I'm using slick 50, no problems...I think CRC makes a additive that supposed to help with chattering... cheers Frank   Perrone Ford (Perroneford) Member Username: Perroneford Post Number: 227 Registered: 02-2003 Posted on Wednesday, December 24, 2003 - 04:07 pm:    The TruTrac / Detroit doesn't need any additives. It is not a friction plate setup like most limited slips, it is gear driven. Just use a quality synthetic oil like Mobil 1, Amsoil, Royal Purple, or Red Line. -P   Bill Bettridge (Billb) Dweb Lounge Member Username: Billb Post Number: 1335 Registered: 02-2002 Posted on Wednesday, December 24, 2003 - 05:20 pm:    Do NOT NOT put synthetic in with brand new diffs - let them break in with cheap 80w90 gear oil. You have to change it in the first 1000 miles anyway as it will be full of crap from the new diffs. Also - the synthetic will not let anything wear in properly. After that - just go with the synthetic of your choice. Bill   Perry Ray Miller (Discojunky) New Member Username: Discojunky Post Number: 35 Registered: 03-2003 Posted on Wednesday, December 24, 2003 - 07:56 pm:    Thanks, Once again for the free education!   Will Cupp (W_cupp) Member Username: W_cupp Post Number: 245 Registered: 07-2003 Posted on Thursday, December 25, 2003 - 11:51 am:    Bill is right. But, when you do change at 1000-1500 miles or so I used the Lucas additive in my Detroit. That stuff is super thick, and seemes to quite down the unit a bit. The TT advises an additive is not needed. I use Valovline 90w there. I change my diff fluid so offen that I just cannot justify going with a synthetic. Once I use up the last of the bottles I have I am going to just buy it by the 5 gallon bucket, and use a pump.   Perrone Ford (Perroneford) Member Username: Perroneford Post Number: 228 Registered: 02-2003 Posted on Thursday, December 25, 2003 - 10:09 pm:    Yea, good catch on not using synth for breaking them in. -P