Saab95aero

Hello. I am now a proud owner of a Very Clean maintained 2007 E55 RWD 95k on clock. After oil change to amsoil 5-40 manns filter its quiet when cold start up until it gets to temperature then sounds like a quiet diesel. Above 750 rpm quiet again and whisper quiet at any speed. Is this normal? Wasn't as loud before but still rattled and didn't pay much attention. Reading other threads going to put in can of sea foam and pay for Mercedes (manns) filter with fresh oil and can of liquimoly mos2. Learning that this is a high volume low pressure oil pump should I go with heavier or lighter viscosity oil. 10-30 maybe better flow or 15-50 bigger cushion with careful warm up of course. Also is there a spot to plug in a mechanical oil pressure gauge. Thanks for your brain power in advance. K

T9ja

Welcome to the club. If I were You, I'll double check if I really got a 2007 E55 ...

Saab95aero

Sorry. 2007 E550 Sport RWD. Non AMG. Local guy that works on a lot of Mercedes says likely balance shaft n chain bit of play but normal. I'm not satisfied with a likely answer, that's why posted here with the knowledge and experience. Thanks K

Saab95aero

Hello. There was no intention to say I have an AMG as previous threads imply (uneducated). I posted on both forums to get more input. I am extremely impressed with the engineering and design that goes into a Mercedes. I'm sure others experienced this and hopefully I can learn from their experience K

Saab95aero

Update. Didn't use sea foam due to conflicting opinions. Added liqui molly to existing oil. Seems to be quieter but also noticed even before adding liqui molly when it got real hot it was quieter also. Trying to pick up on a pattern. Would like to hook up mechanical oil pressure gauge but can't find location. Opinions are greatly appreciated. Thanks K

Tavs

Oil pressure test port is at the base of the oil filter housing. Rectangular shape with a round 4 or 5mm screw in the center.