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DateQuestionAnswer
06/09/2005
Switching to Synthetic Oil in Higher Mileage Vehicles
Does switching from a petroleum-based oil to a fully synthetic oil on a higher mileage vehicle (75,000 miles) have any harmful effects? I've heard that the synthetic oil, because it is cleaner, may ac...
When switching to Mobil 1 in higher mileage vehicles, we recommend an initial short (2,000 to 3,000 miles) oil change, both oil and filter. This will allow Mobil 1 to clean some of the engine deposits...
03/30/2005
Switching to Mobil 1 in High-Mileage Cars
I have a 1991 Mercedes-Benz 350SD, and at the 135k-mile service, the dealership switched to 5W-40 synthetic oil. It has been using 15W-40 all along. Recently I purchased a 1995 Volvo 960 with 98k mile...
There is simply no factual basis to this myth. You can switch to Mobil 1™ synthetic motor oil at any age or mileage and, as long as the engine is in good mechanical condition, you should reap all the ...
5/1/2004
Switching From Conventional Motor Oil to Mobil 1
There seems to be confusion about how to make the switch from conventional motor to synthetic. I am a do-it-yourselfer. Could you provide instructions?
The instructions are very easy to follow: Simply change the oil as you would normally. Any “confusion” is just myth. You can switch from conventional motor oil to Mobil 1 synthetic (and back again, if...
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