LONDON: Northwest European gasoline refining margins fell on Tuesday after hitting an eight-month high the previous day but remained underpinned by refinery maintenance and outages related to contaminated Russian oil.

* Table of European refinery maintenance and outages:

* A string of European refinery outages after contamination forced the shutdown of Russia's Druzhba crude pipeline has constrained fuel supply across the continent and delivered an unexpected boost to profit margins.

* Hopes for a speedy resumption of oil exports from Russia to Poland and Germany along the Druzhba pipeline route are fading after plans to remove dirty oil from the pipeline had a major setback last week, three trading sources said.

* Russia's Transneft has scheduled a meeting in Poland on Thursday with Polish pipelines operator PERN and Polish and German refineries affected by a contamination of Russian oil, three sources familiar with the matter told Reuters.

* The 38,000 barrel-per-day crude distillation unit at Gunvor's 88,000 bpd refinery restarted at the weekend after being shut down in early May, according to Genscape and a source familiar with the matter.