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General Lubricant Info
Motor Oil the Consistency of Chocolate Pudding
What would make Mobil 1 synthetic oil turn to the consistency of chocolate pudding?
This can occur with any oil if there is a lot of water or anti-freeze (coolant) added to it along with the byproducts of engine combustion. Also see our answer on how moisture gets into motor oil.
How Does Water Get in Motor Oil?
How does water get in the engine oil? Does it blow past the pistons or valves? Does water in the oil indicate the possibility of a blown head gasket?
Water can get into the oil two ways. You generally don't have to worry about one of the ways if you drive your car enough to burn off the water during normal driving.  This drives off the moisture tha...
Should ATF or Motor Oil be Used in a Harley-Davidson Primary
I understand that there are some people who are touting the benefits of using ATF in a Harley primary. What are your thoughts on using ATF in the primary vs your 4T 10W-40 motorcycle oil?
Automatic transmission fluid (ATF) would probably work fine in your primary but in the end you will have to decide if you are satisfied with its performance.  Every biker “feels” his shifts and knows ...
Why Have Multiple 30 Grade Motor Oils if the Protection Level is the Same
I see you stated your Mobil 1 0W-30 wt oil offers the same protection as your 5W-30 and 10W-30 oils. If so, why in the world would you continue to make the 5W-30 and 10W-30 oils when one could have mu...
You are on the right track which is why oil recommendations are getting lighter and lighter. But first give credit to the OEM’s (original equipment manufacturers) who over the years have produced bett...
What Does Low Ash Mean in Motor Oils?
What is low ash?
There are certain additives used in engine oils that, when they leak past the piston rings and get into the combustion side of the engine, can produce ash when burned. This ash can cause filter pluggi...
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