Complex sentence: The same SAE system for designating motor oil viscosity also applies to synthetic oils.over leakage problem in a forthright manner, and this has caused suspicion by many consumers that synthetic oils are merely another overpriced oil scam.
Split into simpler sentences: The same SAE system for designating motor oil viscosity also applies to synthetic oils. Synthetic oil makers have not addressed the leakage problem in a forthright manner, and this has caused suspicion by many consumers that synthetic oils are merely another overpriced oil scam.