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Reply to "ZF Check Oil Level"

That side plug hole can be used for filling but not gauging lube in Mangusta or GT-40 ZFs.  Per the illustration in the ZF Shop Manual, the dash-zero (GT-40) and dash-1 (Mangusta) ZFs have a 6" or 7" long dipstick ass'y (ZF p/n 105) built into their unique top cover (similar to a bottom cover in an inverted diff dash-2 ZF). The dipstick is also the ZF breather. The same threaded dipstick hole in the top cover can also be used to fill those ZFs (slowly, with a small funnel), using the dipstick to gauge the fill to its top mark. Those 50-yr-old dipsticks are NLA as well as the little side-elbow mounted ones.

72-pg illustrated ZF Manual reprints covering all ZFs are available reasonably priced from all the vendors, or from the POCA Archives. All owners should have a copy. Service intervals are listed.

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