SLS is good. VERY good ... but like all the other parts in the D2 it has a working life, then needs replacing/servicing/refurbishing ... due to either kms travelled or age in years ... or both. I'd still get a BPAndy rebuild kit and fit it. As said change the inlet filter as well. Your airsprings are new. Should then be easily good for 5 - 8yrs.
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Kev..
Going ... going ... almost gone ... GONE !! ... 2004 D2a Td5 Auto "Classic Country" Vienna Green
2014 MUX LST with fruit
2015 Kimberley Kamper "Classic"
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