LONDON, Sept 5 (Reuters) - The gasoline refining marginedged higher but remained under pressure by firming crude pricesand cheap naphtha in an illiquid market due to Labour Day in theUnited States.
* Winter gasoline blending has started, which entails ahigher of content of cheap naphtha coming out of high stocksthat dragging down the value of gasoline overall.
* Gasoline demand is expected to subside further after U.S.Labour day.
* Saudi Aramco fixed at least three cargoes of Mediterraneangasoline into the Mid-East Gulf.
* A Sonatrach official told Reuters there was no maintenanceshutdown scheduled for the crude distillation unit at the335,000 bpd Skikda refinery in 2016.
* Saudi Arabia and Russia agreed on Monday to cooperate inoil markets, saying they will not act immediately but couldlimit output in future, sending oil prices higher on hopes thetwo top producers would work together to tackle a global glut.
GASOLINE
* No benchmark Eurobob gasoline traded during the afternoontrading session.
* Some 16,000 tonnes traded throughout the day at $455-$474a tonne fob ARA, up from $444-$454 a during the previoussession.
* A barge of premium unleaded gasoline traded at $477 atonne fob ARA, up from $465 a tonne fob ARA the previous day.
* The September swap stood at around $440 a tonne at theclose, up from $436.50 a tonne on Friday.
* Gasoline barge refining margins were up slightly at $7.67a barrel from $7.28 a barrel on Friday.
* Brent crude oil futures were up 64 cents at $47.47a barrel by 1555 GMT.
* U.S. August RBOB gasoline futures were up 0.76percent at 1.3115 a gallon.
* The U.S. gasoline crack
NAPHTHA
* BP sold a cargo to Gunvor at $381 a tonne cif NorthwestEurope for Sept. 15-19 delivery.
(Reporting by Julia Payne)