986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Will thinner oil reduce cold start rattle?

san rensho · 05-23-2011, 11:11 AM

2000 2.7, 115k. I've had this car for a few weeks now and it has a slight rattle, for less than a second, when started cold. It sounds like lifter noise to me. When I inspected the car prepurchase, I made sure to start it up with the engine dead cold, and I don't remember hearing anything.

As soon as I got the car home, the first thing I did was change the oil to Mobil 1 15-50, car had M1 0-40 in it when I bought it.

So my question is, will the thicker oil make the car more likely to rattle on a cold startup and should I switch back to 0-40?

05-23-2011, 11:11 AM	#1
san rensho Registered User Join Date: May 2011 Location: Miami florida Posts: 1,591	Will thinner oil reduce cold start rattle? 2000 2.7, 115k. I've had this car for a few weeks now and it has a slight rattle, for less than a second, when started cold. It sounds like lifter noise to me. When I inspected the car prepurchase, I made sure to start it up with the engine dead cold, and I don't remember hearing anything. As soon as I got the car home, the first thing I did was change the oil to Mobil 1 15-50, car had M1 0-40 in it when I bought it. So my question is, will the thicker oil make the car more likely to rattle on a cold startup and should I switch back to 0-40?