2005 - 2014 MustangsDiscussions on the latest S197 model Mustangs from Ford.
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New 2014, adding exhaust void warranty? Oil question too
first, the oil, i use the standard motorcraft synth blend. thats what ford built the motor around. doesnt hurt going to a full synth, but 8 quarts per change... yikes! i would only trust full synthetic oils such as Mobile 1, or Royal purple. RP is hands down the best. but... some places its about $11 a quart.
warranty answer. If you add an axle back exhaust, the only way ford can void your warranty is if the issue caused IS AND CAN BE PROVEN to be caused by the part added. if you add an ECU tune, and the transmission takes a crap, they CANT void the warranty on the tranny. but if you say, add a bigger throttle body and intake, and you have a problem with the engine itself, they can toss your warranty out the window if they want.
so, if you add the axle backs, and it causes some kind of RARE backpressure issue that jacks up your catalytic converters, yea, they can void the warranty on that. make sense?
something something something mustang.....
Pypes O/R Xpipe & Cat Delete kit
Kooks Leguna Axle Back Exhaust Kit
Eibach Sportline Lowering kit
Steeda X3 Street tune
AR billet upper/lower Front grills
Location: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)
The blend that comes in the crankcase from the factory is fine for 5k - 7k miles. If you want to go longer, then full syn is fine. Stick with the weight recommended in the OM. I typically run full syn in all my vehicles to 10k or more miles, even my tow vehicles. They've all went well passed 200k miles with no engine issues or performance problems. And my current 4 vehicles will do the same.
Forget about the warranty. That's betting your car will crap out. The law requires the dealer to prove that the non-OE part caused the failure/problem. Most dealerships like to intimidate the car owner. Pull your panties up and grow a set. F**k the warranty. You'll never enjoy the car's potential if you're a warranty wuss.
Pull your panties up and grow a set. F**k the warranty.
Says the guy with a 2007 and no warranty! It's a legit question. It's possible to cause warranty issues but not likely. You could go with Ford Racing axleback and insure you would never have issues. I'm going to keep my 2014 stock. I found that with about 20,000 miles, the stock exhaust system on my 2010 opened up quite a bit over new levels. I expect the 2014 might do the same.
Thanks to the Manugson and Moss warranty act, an aftermarket part installed on a vehicle cannot be grounds for voiding a warranty. The dealer must prove that the aftermarket part installed on the vehicle is the honest cause for any damages that might be claimed under warranty. FTC has confirmed that the Magnuson and Moss warranty act makes it illegal for companies to void your warranty or deny cover under the warranty simply because you used an aftermarket part.
You can find more info about it here, or you can google Magnuson and Moss Warranty act:
I've never heard of it voiding a warranty. I'm knew to Mustangs, but I've never heard my Vette buddies ever say an exhaust swap causes issues and they always change theirs out at first opportunity. they're just like the Mustangs, come with a puny exhaust that says sedan more than performance car.
I'll be changing mine out as soon as I recover from the purchase and my direly needed stereo upgrade.
As far as the oil, it's always best to use the oil that is recommended. but the manual also says you may use any oil as long as it meets SAE requirements. But stay with the proper weight.
Royal Purple is the best from what I have heard. I use Mobile 1 in the vette and that's what they recommend so I will be using Motorcraft in my Mustang. (ole Henry)
I did read the manual state you should go by the oil life monitor for normal driving or every six months whichever comes first, which is different than my vette, it says oil life monitor or at least once a year IIRC. So if you don't use the dealer make sure you have it changed where it's recorded should the need ever arise. receipts for oil sometimes gets questioned if you can't back it up.
Take care of your car and it will take care of you.
Last edited by RetiredSFC 97; 02-26-2014 at 08:54 PM.
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