Use EP 80W/90 oil instead of EP90 oil in a Belle MiniMix 150 gearbox

Remove all the plaster/stucco that seems unstable. Wash with a mild acid solution to remove salts that have leached to the cement surface with the water penetration (efflorescence). Dampen the area to be patched and cover the exposed surface with matching stucco/plaster material. No attempt at waterproofing from the inside will be effective.

I believe it is the same product and can be used in either job as a primer or as an additive to give the concrete more resiliency and plasticity. Your description makes it sound like the same product here in N.A. To be sure it can function as a primer try this test: using a paint brush apply it full strength to a clean out of sight concrete surface. If after several minutes it dries to a clear to opaque finish it's most likely a concrete primer (the brush that was used should now have a plastic film from the dried polymer). To use as one I recall that the newly applied primer should not be allowed to dry before the cement is placed. If it does I think you just recoat with another application. To use it as an admixture for better workability (in mortar mostly): pour the recommended amount into a clean bucket and than add the required amount of water for the batch to the same bucket and mix. Now add polymered water to the batch.