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- W646103627 abstract "New engine oils are being marketed as 'Euro-4', but the development of these oils has in reality been driven by the E6 and E7 heavy-duty diesel engine-oil specifications from ACEA (Association des Constructurs Europeens d'Automobiles). Not all Euro-4 engines will need E6 or E7 oils, which are mainly for engines with advanced exhaust emissions control systems. E6 oils have low sulphated ash, phosphorus and sulphur (SAPS) levels. Shell's new Rimula Signia E6 has a sulphated ash content of less than 0.95%. The key to creating low-SAPS formulae is to focus on anti-wear additives, anti-oxidants and detergents. Shell also added E7 compliance to Rimula Signia. E7 replaces E5, with a tougher test (the Mack T-10 test) for handling abrasive wear of piston rings and liners. E7 is particularly good for exhaust gas recirculation engines. The oils are also compatible with selective catalytic reduction exhaust after-treatment. Rimula Signia has a conservative viscosity, 10W-40. The base oil in Signia is an example of the SAE group 111 oil, derived from hydro-cracked low-sulphur mineral oil. Other oil companies, e.g. Castrol, are keeping their E6 and E7 products separate." @default.
- W646103627 created "2016-06-24" @default.
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- W646103627 date "2005-04-01" @default.
- W646103627 modified "2023-09-23" @default.
- W646103627 title "What price a holy grail of engine oil" @default.
- W646103627 hasPublicationYear "2005" @default.
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