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Originally Posted by E90Fleet
That is a European bottle and the form is from from the european castrol specs sheet
Also remember ther is a "softec TXT" and a "softec TXT LL-01"
If you want the bit from the South African website\
"Synthetic technology formulated for modern petrol and diesel engines with or without turbochargers and intercoolers.
Key Benefits
Castrol TXT Softec LL01 is also suitable for vehicles fitted with catalysts and is suitable for leaded or unleaded petrol. Castrol TXT Softec has been formulated to meet the requirements of the latest Hi-Tech engines designs with preferences towards lower viscosities, fuel saving contributions, plus reduction in both cold start wear and hydraulic lifter noise.
Castrol TXT Softec outperforms heavier viscosities with respect to volatility and inlet manifold wetting in harsh South African and Namibian test conditions where oil sump temperatures exceeded 150°C operating temperatures. Oil consumption due to volatility is also reduced:
Proven South African performance
Synthetic engineering for assured protection and performance reserves
Superb cold start performance
SAE 5W/30 viscosity rating
Balance of economy and power
Extra anti-wear performance
Turbocharger proven
Specifications
API SJ/CF4
ACEA A3 / B3 / B4
BMW LLO1 "
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Things must of changed,prior they did not recongnise Group III oils as synthetics.
After all it's just highly hydrocracked dino.