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DateQuestionAnswer
07/06/2008
Is Valvoline's Claim that its 5W-30 SynPower is 4 Times Better than Mobil 1 5W-30 True?
Valvoline now claims that its 5W-30 SynPower is 4 times better than Mobil 1's 5W-30 full synthetic,(they are launching a massive ad campaign on it) is this true?
We are aware of the recent advertising campaign in which Valvoline asserts that Valvoline SynPower offers four times better wear protection than Mobil 1. ExxonMobil is not aware of any accurate tech...
04/17/2008
Do New Diesel Engines Use More Oil Initially
I purchased a Mercedes-Benz 2008 GL 320 CDI diesel using Mobil 1. After 2500 miles it was down 2 quarts of oil. The dealer explained by stating that diesel engines use more oil when new, but get bette...
Higher oil consumption in a new vehicle is usually associated with engine break-in, which means that the piston rings and cylinder liners need to mate with each other. Continue to monitor oil consumpt...
04/13/2008
What Lubricant is Best for Transmission Syncros
Hi, I just purchased and had a 1995 Aisin AX-15 rebuilt to put in my Jeep Wrangler. The Transmission shop said to run 10W-30 motor; they said synthetics were too slick and would not allow the syncros ...
According to our information, the 1995 Aisin AX-15 requires a GL-5 75W-90- gear oil. Mobil 1 Synthetic Gear Lube LS 75W-90 would be a good choice.
03/25/2008
Is There Any Harm to Mixing Different Mobil 1 Viscosities?
I drive a '97 BMW 540i (85K.) on 0W-40, and a 2005 Subaru 2.5L (25K.) on 5W-30. I have used Mobil 1 for at least 10+ years now. I do keep drain intervals right at 5,000 miles on all of my cars, as it ...
Today’s modern vehicles require a less viscous oil in many cases than in the old days. Having said that there is no harm in mixing different viscosities of Mobil 1. They are all compatible with each o...
03/25/2008
Dealer Suggested Going 10,000 Miles Between Oil Changes on Mobil 1
I own a 2007 Nissan 350Z with 21,000 miles. I'm on my 2nd oil change at the dealer at intervals of 3,750 per the owner's manual. I started using Mobil 1 and changed my intervals to 5,000 miles. I spok...
You can go 10,000 miles between oil drain intervals with Mobil 1.  We suggest you follow your owner’s manual recommendation while the vehicle in under the manufacturer's warranty.
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