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Originally Posted by HIDGolf
anyone know how many of the 2.5 turbos had ASD? (auto locking rear diff) Is it a common option?
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Mine has ASD. To be honest with you, I really wish it didn't have this option. If you happen to have this option, you will notice some extra hydraulic hoses and a hydraulic tank that sits on the left wheelwell. The power steering pump doubles up as the pump to pump fluid to the rear differential when the ASD system is activated. Also, if you happen to have your car up in the air, close to the differential, you will see the electronic valving mechanisms that send the fluid to the rear differential.....seems highly complicated.
Herb
'82 240D
'87 300SDL
'92 300D 2.5 Turbo