Diesel

michael · #1 11-08-2006, 06:33 PM

Why do diesel engines require different oil?

Hose92SVX · #2 11-09-2006, 01:32 PM

The diesel motors create alot of soot and the oil designed for diesel is suppose to suspend the soot particals so the soot can make it's way to the filter instead of collecting somewhere in the engine.

michael · #3 11-09-2006, 06:06 PM

Thanks, I currently use diesel oil but someone told me to switch to Mobile 1.

Beav · #4 11-09-2006, 07:40 PM

Yeah, yeah....that's it! What he said....

michael · #5 11-10-2006, 05:54 AM

Come on, I know better than that! That's why I asked, why else would they make 50 different kinds of diesel oils. Besides I don't even trust Mobil 1 to begin with, it made my svx weap from every gasket.

Hose92SVX · #6 11-10-2006, 08:45 AM

I can't tell you which oil to use because I don't switch around and take oil samples to see how things are wearing however for what it's worth I've used Shell Rotella15-40 in my semi and have no unusual wear areas or leaks. I would try to stick to one type of oil/weight as much as possible becuase there are slight differences and you want the motor to wear evenly. I think as long as you use a quality name brand oil and change your fluids often you'll be fine. The fuel you use also plays a part in the lubricity of the injectors and cylinder walls as diesels have high compression and alot of blow-by. Use quality fuel from reliable fueling stations because as diesel settles it starts to seperate and the lubricity of the fuel will change. Two things that shorten the life of a diesel motor is driver controlled. Lugging a diesel motor with all that high compression will wear out your bearings quicker, and make your oil dirtier quicker becuase the exploded gases will be wasted as blow-by instead of doing useful work of turning the crank. Second, running high RPM's will shorten the turbo and flatten out the cams at a quicker rate. Good luck and sorry about the weaping SVX. If a seal has a chance of leaking synthetic oils will let you know. On the bright side Sythentics clean up easier