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: SO heres the deal. i have a 94TT at stage IV. It has ~59K miles and runs great. The previous owner ran regular oil and so i continued using regular oil. I have been considering switching, but i have heard many horror stories of engines starting to leak after switching to synthetic. (not sure if this is just a myth) I do not want that to happen obviously to my Z. i change the oil about every 1000-1500 right now. It does not seem that i am burning any oil. i get about the same amount out of the engine as i put in. So, should i switch to synthetic on the next oil change? : Next issue is mid pipes/test pipes. I have stock pre-cats that have not been gutted. I do not want to spend the money to drop the tranny to install downpipes, and i have heard that gutting the precats while on the car is dangerous for the turbos. so if i want to keep the precats the way they are, would i benefit any HP from installing test pipes or mid pipes or would it not add any power? : Thanks in advance.
: -Ketan On the synthetic oil, go to the Redline site on the net and read what they have to say. Lots of good science there. They will also talk to you on the phone. As a general rule I have found the "leaks" a myth. With only 59 K on the engine it's not like you are going to disloge gunk like a high mileage engine with well over 100K. Mobil 1 or Redline are great sythetics. Or talk to the folks at [ www.myoilshop.com, ] great folks for synthetic products. Kentatwater
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