dexos

  1. Y

    GM dexosR/dexosD specifications

    dexosR = dexos1 Gen3 + stricter GM Oxidation + stricter GM LSPI + stricter GM Turbo + ACEA M111 Fuel economy test (first I've seen for a XW-40!) + ACEA OM646LA Diesel Engine wear test dexosD = ACEA-23 diesel tests + API tests (valvetrain wear + Low temperature sludge + Bearing wear)...
  2. J

    vw504/507 vs dexos1 gen 3 with high Sulphur fuel

    Hi, I have been running Valvoline Synpower 5w30 Dexos1 in a GM 3.6 LFX. At the moment, I have access to Castrol Edge 5w30 Long Life which is a VW504/507 acea c3 low saps oil. I can get the Castrol at half the price of the Valvoline, so obviously tempted. My concern is TBN retention using high...
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