It's not the oil. He was running Delvac and had the problem then, before the dealer changed the oil.
Like any other MB, oil pressure should peg essentially as soon as you move off the line. MINIMUM is that it peg at 3000rpm, which on that car should be around 50mph. Oil circuit description and test procedure attached, job 18-205. You could try checking the oil pressure relief valve on the pump. It is easy to reach, just remove the lower pan. The 617.91x engine manual, job 18-215 attached, specifies a repair to the valve "in case of complaints of low oil pressure". Apparently they tended to come loose in 617.910 engines. There is a revised valve design and a recommended sealing compound. D. > On 5/1/2011 2:38 PM, Kaleb C. Striplin wrote: >> I drove the car a little bit yesterday and was able to get it to the >> point that at hot idle the pressure drops down to about half way >> between the bottom and the 1st mark. It pegs when revved up but >> without a tach Im not sure what rpm its running. I know that on flat >> ground in 4th going about 60 mpg it will be just right off being >> pegged. Its not against the peg but its almost there. It does seem >> to be low but what I dont get is the fact that this oil is not pitch >> black like all other diesel oil I have seen so I still think it might >> be something to do with the oil thats in there. >> > > > > _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
