Because of their higher flash points, and their means to face up to evaporation loss and oxidation, synthetics are much more resistant to sludge development. Two other causes of sludge ingested dirt and water dilution can be a difficulty in any form of oil, even if petroleum or artificial. These are problems with exam air filtration system and examination cooling system respectively, not exam oil. Myth 7: Synthetics can’t be used with catalytic converters or oxygen sensors. Untrue. There is no difference among synthetic and petroleum oils with reference to those components. 119 December 2013 accessible online at 2006. Formation of Contracts in International Transactions: examination Issue of Battle of exam Forms underexamination CISG and examination UCC , Thesis, Central European University, Budapest, Hungary November2006 96 p. 2007. Battle of Forms under exam Convention on Contracts for examination International Sale of GoodsCISG: A Uniform Solution?, 11 Vindobona Journal of International Commercial Law andArbitration 1/2007 113 129 2004. Comparison among provisions of exam CISG Article 20 and examination counterpart provisions of exam UNIDROIT Principles of International Commercial Contracts, UP Article 2. 8 August 20042004.