yes as it is bad but u cud find a new type of oil or you cud stuff up the cars engine and hav 2 buy another 1
very bad! change the oil
A bad head gasket is the most common cause of antifreeze mixing in the oil. The antifreeze will dilute the oil and it will eventually cause your engine to seize up.
Crude oil but there are several different grades of crude.
Crude oil. and this comes in different grades.
Short Answer is Yes but don't mix brands Long answers From the Chevron.com site: "Can I mix different viscosity grades of motor oils?" "Yes. It is always advisable to not mix motor oil brands, however, different viscosity grades of the same brand motor oil are compatible. Be aware that mixing viscosity grades will turn out a product that is different in viscosity than either what was originally in the engine or what was added." From Shell.ca: "If you mix viscosity grades such as a 5W30 low-viscosity oil and a 10W40 higher-viscosity oil, it is reasonable to expect that the resulting product will have viscosity characteristics which are thicker than the 5W30, but thinner than the 10W40. This change does not reflect incompatibility - it's simply a re-balancing of the viscosity characteristics. In all other ways, the product should work as expected. But there's absolutely no danger about incompatibility resulting from mixing engine oils," Miller says. "We've tested all of our grades and brands, and we haven't observed any problems." From Mobil1.com: "For our customers to choose a viscosity grade, we recommend they follow the engine manufacturer's recommendations as indicated in their owner's manual. There is no need to mix two Mobil 1 viscosity grades when one will do; however, we see no problem mixing different SAE grades of Mobil 1 Tri-Synthetic series motor oils."
Could be oil mixing with antifreeze indicating a bad head gasket Are you losing motor oil?
If you're noticing oil mixing with coolant, possibly a bad intake gasket or head gasket.
No. People often change grades of oil for the summer or winter.
Bad head gasket? Oil mixing with coolant?
You may need to have your engine compression tested. To make sure it's not mixing your oil and coolant together. This will be a sign of a bad head or bad head gasket.
Different grades, D5 is like heating oil that has little to no odor.
no oil and water do not mix