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Ask Mobil Archive -
Chevrolet Other than Corvettes
DateQuestionAnswer
04/25/2008
Explain the Differences Between the Diesel Motor Oils
I noticed on your web site that the Mobil 1 Turbo Diesel Truck 5W-40 is rated CJ-4. I currently use Mobil Delvac 1 ESP 5W-40, which is also rated CJ-4 in my 2008 Chevrolet 2500HD Duramax Diesel. Are t...
Both products have different formulations and both exceed API CJ-4 requirements. Either product, however, can be used in your particular engine. Mobil 1 Turbo Diesel Truck 5W-40 is specifically formul...
12/19/2007
Mixing Motor Oil to Reach the Right ZDDP Level for Classic Cars
For an older, flat tappet, performance motor with inherent cam wear issues is there any benefit to mixing high ZDDP Mobil 1 Racing 4T 10W-40 to Mobil 1 High Mileage 0W-30 oil? The 15W-50 creates TOO M...
Mobil 1 0W-40 already contains a higher level of ZDDP (1000 ppm) that could benefit your flat tappet engine. We also have a Mobil 1 High Mileage 10W-40 (1000 ppm); see our table listing the phosphorou...
09/12/2007
Will Mobil 1 Extended Performance Hold Up in a Turbocharged Car?
I have a 2007 Cobalt SS that is aftermarket turbocharged. Is your extended life synthetic still going to hold up for 15,000 miles in a turbocar used most of the time for regular street driving?
Since this is a new vehicle, our recommendation is to follow the vehicle manufacturer’s  recommendation for drain interval while the vehicle is still under warranty.
07/18/2007
Proper Change Interval to Avoid Moisture Buildup in Infrequently Driven Car
I have a 1988 Chevrolet Caprice Classic Brougham LS with under 70,000 miles. It's a 4-barrel carb/5.0 V-8. It's been garage-kept its entire life in showroom condition and driven "lightly" 2-3 times pe...
If you are getting the vehicle up to speed and warmed up at least every few weeks, then maybe you are changing your oil too frequently. If you never got it warmed up and hot to burn off moisture, we w...
02/17/2007
Is it Okay to Ignore the Oil Change Reminder when Using Oils with Extended Drains?
I switched to Mobil 1 extended service oil in my 2002 Silverado and was expecting to extend the service interval. The change oil message came on at about 3,500 miles, the same as the standard oil. Is ...
The oil change sensor in your vehicle is measuring certain operational parameters which, based on the 3,500-mile recommendation, indicates operation under severe service.  The sensor system does not k...
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