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Are Synthetic Blend Motor Oils Best for Infrequently Driven Cars?
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Are Synthetic Blend Motor Oils Best for Infrequently Driven Cars?
I have 1984 Mercedes 300 SD Diesel auto with 160,000 miles. No blow-by at this time. Is semi-synthetic 15-40 wt. or fully synthetic 15-40 wt. the best way to go? I've been told semi-synthetic is best for those cars not driven everyday because the oil will cling to the cylinder walls for a longer period of time and not drain off. Thanks much.
-- Ron Lyda, Albuquerque, NM
The best option will always be a fully synthetic oil over a synthetic blend due to its superior protection against deposits and longer engine protection. To find out more about our Mobil 1 fully synthetic products, please visit our Mobil 1 Extended Performance and Mobil 1 sections of this web site.

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