Because of Ring burnt, engine heat-up or loose piston in sleave.
Mobil 5w30 ESP synthetic
mobil 1 0w 40
Anywhere from 4 dollars for Mobil or Valvoline to 11 dollars for Red Line Motor oil (diesel). Shell is somewhere in the middle at 6 to 7 dollars a quart.
mobil 1 0w40
Rotella 10W40 is probably the most popular. DELO probably has the best base oil but the additive package isn't as good as some. DELO is an acronym for diesel engine lubricating oil and was the first oil designed specifically for diesel engines. My personal favorite is Mobil Delvac.
This question refers to the 1993 Chevrolet K1500 with the 6.2L diesel (engine code 'C') 8-cylinder 4WD. The K1500 has a service capacity of 7 quarts. Synthetic 5W40 and 15W40 is suggested for this diesel application. Shell Rotella T, Mobil Delvac I (Turbo Diesel Truck), and Chevron Delo 400, make grades specifically suited for this engine.
In the Mobil 1 line one could mostly find Engine Oils for ones vehicle. Particularly synthetic oil. Listed on Mobil 1's webpage is 8 different formula's of synthetic engine oil that one can purchase for one's vehicle.
Mobil 1 10w/30 or Mobil 1 Highmileage 10w/30.
I believe the engine is a Detroit Diesel 170. The truck has about 900K in miles on it. I've always used Mobil Delvac, but someone told me that I was wasting my money. Any suggestions?
mobil 1.
Mobil 1 5w-30.
No the engine fluhsing does not ruin the engine. Cleanliness of diesel & Mobil oil is of the utmost importance. Damage to engine can occur if diesel & Mobil are not properly and completely cleaned. The contamination in the engine can occur from various sources, such as bio degradation of fuel, formation of microbial contents, water presence, More sulphur presence, gum, wax, and sump tank etc. The flushing need is arises due to black smoke coming out from silencer, increase in fuel consumption, drop in pick up, due to increase in wear & tear of the the engine component etc................ The flushing needs to be done with a proper procedure, whether your vehicle engine is under warranty period or not but this procedure should be carried out in authorized workshop. If the precautions are not taken then the engine failure will take place. The other way out is to to take the diesel from fuel pump & changing the mobile on time interval recommended by the car manufacturer. In case if the over heating takes place check the viscosity of the mobil and then only use it. In case if there is any hose leakage that will drop the oil level which you can see in the oil indicater then use top up oil or if it has reached changing interval period then change it with new oil.