Do this or Not with 136,000 miles I need All you Experts
 

As you can see with my question, Can I put synthetic oil and hopefully I spelled it right, into my 136,000 miles Stang. What about the trans, and the rear end. I gotta make sure because Im going to travel with the car From Miami to Connetticut. I use X1-R
Lubricant but I also gotta use my regular oil. It's just a thought and I'm wondering If I should. My car has No leaks as for now.

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89 Police Interceptor
BBK Shorty Headers, K@N Cone Filter,H-pipe no cats, 2 chamber FlowMasters,Under Drive Pullys,14 degree Timing, Short Belt, No Air Silencer, oil cooler, 3.08's, And All Police Package goodies

I use exxon superflow synthetic (blend)20 w-50 racing oil, and it works great.

oh and i changed my t-5 fluid today with some mobile1,and it shifts a bit smoother http://www.mustangworks.com/interact...oard/smile.gif

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90 lx coupe: Mac cold air fenderwell, accel supercoil,advncd ignition,3-core radiatr, FMS alum D/S, Black magic fan, 3.27grs, 3chbr flows.
Best time: 14.20(on 225/60/15 firehawks)
Best mph 97.80
Best 60' 2.1
next mods: subframes, 3.73's

O, and i have 168K miles on my motor. I do have some minimal leaks http://www.mustangworks.com/interact...oard/frown.gif