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Old 06-17-2011, 04:08 PM
BigRed10287 BigRed10287 is offline
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Join Date: May 2011
Posts: 159
Default What Lucas to add?

I picked up some full synthetic Dex/Merc IV today to replace the B&M TrickShift I previously put in my trans, but before I do that I'm still wondering exactly which Lucas to add a cup of into my trans. I know the M50D's run ATF but don't most auto trans additives only lessen the viscosity too much for a standard trans?
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2001 XL 2.5l 5 speed, 19lb injectors, 94 Cougar Resonator for muffler, Spectre DIY intake kit, Royal Purple in engine & rearend, Full Synthetic DEX/MERC IV with Lucas fluid in trans, painted rear half of frame, 3/3" drop, Bronco II rear sway bar, blacked out interior panels, pioneer speakers and head unit.
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Old 06-17-2011, 04:15 PM
mickblock mickblock is offline
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Default Re: What Lucas to add?

Doesn't sound like a good idea to use an additive. When you're using synthetic you already have something that has very stable requirements. Why go any further with something that has it's own properties that might change?
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Old 06-17-2011, 04:23 PM
BigRed10287 BigRed10287 is offline
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Default Re: What Lucas to add?

Heard from several others that this mix worked great. Only problem is that I can't get a straight answer on which Lucas they used, so I figured I'd post a thread and see if anyone else has done this and can tell me which one to use.
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2001 XL 2.5l 5 speed, 19lb injectors, 94 Cougar Resonator for muffler, Spectre DIY intake kit, Royal Purple in engine & rearend, Full Synthetic DEX/MERC IV with Lucas fluid in trans, painted rear half of frame, 3/3" drop, Bronco II rear sway bar, blacked out interior panels, pioneer speakers and head unit.
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