Caterpillar SAEO Oil for 3116/3126

That's what the ransom boys told me maybe they where just trying to justify the price. Here is the lit doesn't say what it is.

http://www.toromontcat.com/pdf/SpecialApplication.pdf



After a little more research

Caterpillar does not recommend the use of multigrade oils in the 3116 and 3126 Marine Diesel Engines that use mechanical unit injection (MUI).

Multigrade oils use high molecular weight polymers as viscosity index improvers.

When the crankcase blowby flows through the turbocharger and the aftercooler, the viscosity index improvers in the oil vapor can adhere to the turbocharger compressor and aftercooler core.

The fouling of the turbocharger and aftercooler can cause reduced air flow, loss of power, and increased black smoke. The emission of black smoke results in buildup of soot on the transom of the boat.

Caterpillar SAEO (Special Application Engine Oil)
For maximum performance in 3116 and 3126 Marine Diesel Engines with mechanical unit injection, Caterpillar recommends the following engine oil:

Cat SAEO (SAE 30)


Cat SAEO (SAE 40)


Commercial Oils
Caterpillar does not warrant the quality or performance of non-Caterpillar fluids.

When Cat SAEO is not used, use the following commercial oils:

Single grade oil with a viscosity of SAE 30 or SAE 40 that pass all API CF-4 category requirements is preferred.

Single grade oil with a viscosity of SAE 30 or SAE 40 with an API CF-4 or API CG-4 additive package that does NOT contain viscosity improvers is acceptable oil.


For an acceptable commercial single grade oil, contact your oil supplier or Caterpillar Customer Service:

1-800-447-4986
Note: Caterpillar recommends the use of single grade oils that pass all API CF-4 category requirements for all 3116 and 3126 MUI Marine Engines unless crankcase blowby has been routed completely away from the air cleaner inlet.


Read more: http://www.justanswer.com/questions/...#ixzz0avf1byLi

If the cat oil isnt synthetic like they claimed it has no advantage over rotella T. http://www.shellusserver.com/product...RotellaTSG.pdf