Discuss Oil Change 180,000 MILE 1994 Mustang GT AODE on AllFordMustangs.com, the place for Mustang enthusiasts.
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Hey everyone my car has 180,000 miles on my 1994 GT. I have been using 10W30 fully synthetic Mobil 1 Extended life motor oil. I dont think its working that great. I hear more clicking in my valve covers. Should i move up to 10W40 OIL? Whats the difference or should i get like 15W50 or is that to much. I run my car hard at times.
1994 GT AODE, Performance Automatics Street/Strip Valve Body , 3.55, BBK(H PIPE, Equal Length Shorty Headers, UnderDrive Pulleys -minus Alternator Pulley, Spring Insulator & CAI), FlowMaster Super 44's Dumped, MSD(Distributor, TFI Blaster Coil & 8.5 Super Conductors), Ford Racing B Springs, KYB AJX Adjustable Shocks, AJE(Tubular K-member, A-Arms & 5.0 Solid Motor Mounts), Stiffler Transmission Crossmember, SVE Rear Upper & Lower Control Arms, Explorer Intake, A/C Delete, Smog Delete
If you want, you could go up to the 10W40 and shouldn't have a problem. The 15W50 is really thick, so I ask what's your oil pressure now when it's at cold start up? During the summer the 15W50 is alright but in winter it might be too thick.
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you have to realize your engine has a ton of miles,true the 5.0 last some to 300k but unless you bought it new the other owner(s) might not of cared for it well. I'm sure the oil pumpshas alot of wear and some oil build up in the engine...it might be wise to pull a V/C and go over the valves to see how loose the rockers are..