W126, Repair Kit

I need some help in a bad way. I have a 300SD and the oil pressure gage is doing strange things. Once the car warms up and I am under power, say more that 1500 rpms the oil pressure gage will just drop to zero. If I let off the throttle and slow the car down the gage then will immediately peg to 3 then come down to between 1 1/2 and 2 at idle like it should. I only have this problem once the car warms up and when the gage drops from 3 to zero it is like someone just flips a switch and then also the gage will just jump around sometimes. My question is do I have the oil pressure sender failing or is my oil pump failing?

I have an 81 300sd with 334,000 on it. Have changed the flex plates and recently had the driver's side rear wheel bearing looked at because i was experiencing a clunk when i put the car in reverse. The mechanic said the bearing was going, but tightened it up and now the clunk is better ( a temp. fix... part is on the way...) but i have been noticing a 2 stage clunk when i accelerate after the car warms up. if i depress the accelerator quickly and let up quickly it clunks on the depression and release, also when the tranny downshifts when there is no load on the drive line, like when i am coming to a stop going up hill. any clues?

I have replaced both the front and rear shocks on my 1982 300SD with the bilstein comfort line. Now the front rides considerably higher than the rear. Have I overlooked something simple?

In my limited experience with WVO I have encountered several kinds and types out there, It seems that it is universal knowledge to stick with what originally was 100% pure oil of some kind and to stay away from the hydrogenated stuff. My question goes further... I like to know what are the better WVOs? and what kind of WVOs to avoid?. Maybe on a "TOP 10" format. Corn, Soybean, Rice, Cottonseed, Canola, Peanut, Palmoil,etc,etc,etc. If there is any written information about this please refer, this will help all current and future lipid users.