ben walker:
quote:
What is available?
There is only one BESCO 10W-30 HDMO available in the market; the rest are 15W-40 dinos and 5W-40 Delvac 1 synthetic. The problem with the BESCO brand is that it is only API CD rated; we know that API CD has long been obsolete, why does Isuzu insists on using this HDMO for the direct-injection 4JX1-TC engine which is turbo-intercooled, EGR-equipped, catalytic converter equipped, etc., etc.?
sprintman:
quote:
You can't go wrong with D1 IMO. I worked in the Phillipines for a while (Puerto Princessa, Palawan) and know how hot it is. I wouldn't have 5/10W30 in it if it was mine.
Good point, at my place the ambient temperature does not go below 20 degC even during the coldest months of the year. But, I would be hesitant to use the xW-40 oils because there are several (two?) stickers/decals/labels in the engine compartment WARNING the Trooper owner to use only "either a 5W-30 or a 10W-30" HDMO. The user manual also states "only a 5W-30 or a 10W-30 oil" should be used with the Trooper having the 4JX1-TC engine. The dealer's service engineer advised me that the limitation on the engine oil has something to do with the engine oil being used in the common-rail direct-injection system. Please refer to this
web page. The simplified explanation is that this engine needs light oil so that during start-up, the oil will be able to reach the fuel injectors as fast as possible in order to initiate compression of the fuel for proper firing. In simple words, the engine should start within a few seconds not exceeding the normal of 6 seconds, otherwise a hard-starting condition could insue that will result in excessive engine wear during engine starts.
I am not sure if the service engineer is correct, but to be in the safe side it is always prudent to follow the manufacturer's recommendations as regards the specifications of the engine oil. Maybe I would consider an xW-40 oil if it were "SAE 0W-40"; I am sure the 40 degC cST viscosity for this oil would be within the range of that for the 10W-30 oil.
Thanks guys for your comments.
ondoy
'01 Trooper TDI