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09-11-2009, 06:47 PM
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#14 |
 
Drives: '06 Yaris Hatch and TT 300ZX Join Date: May 2009
Location: Brisbane, Australia
Posts: 39
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It's to protect the auto transmission. You don't want it going into 4th while the trans fluid is cold, it will greatly increase the wear. If you're driving round town in 4th gear then most of the time the torque convertor won't be in lockup and will slip accordingly. This slipping on cold fluid is what they're trying to minimise. Once the fluid has warmed up sufficiently it will allow you to use all gears.
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 '06 LB 2NZ-FE w/ NST crank pulley "No RWKW" | '89 2+2 VG30DETT Z32 300ZX "Lots RWKW" ;) |
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