This exact point (15w-40 in turbos) has been posted about before, and with oil there is always a matter of opinion or subjectivity but: IMHO, 15w-40 is a very bad idea for a turbo car in a cold climate. I might try a 10w-40 high mileage oil in this situation, there are plenty of good ones. Yeah as ...

Volvo nivomat shocks look like this:

In the manual it says the car is designed to run on as low as 87 octane fuel but is optimized for 91 octane. Lower performance and fuel economy will come with the 87 but still at a cheaper price than 91. Personally I run 92 (no one sells 91 where I live) but if I needed to save money I wouldn't be w...

Alright, here is a link to a video of the noise from my actual car:

As you can hear it speeds up with rpms also isn't as frequent when rpms are higher.

Yeah I listened to a video of one making noise and it didn't sound similar but I'll check it out anyway.

I'm not exactly sure where the thermostat is but a quick google search should fix that. Am I just listening for the noise I'm hearing to be coming from this thermostat?

It's definitely NOT the usual lifter ticking noise, I am aware that they are hydraulic and that the lifters will make some noise. This noise is much louder and more of a knock than a tick. I'm going to try to record a video soon, but don't know how good the sound will be. You say that you don't have...

The sound seems to be coming from the back of the engine more so than the front, as far as top or bottom goes I'd have to say it sounds like it's coming from the bottom more than the top. But without actually pin pointing the noise it's hard to say. One of the two mechanics I had listen to it worked...

Forgot to say it has about 185,000 miles on it.

Hi new to the forum. I have a 97 850 GLT (low pressure turbo) wagon. The engine recently started making a loud clicking/ knocking noise. It started right after I changed the oil for the first time since I had it. Previous owner said he ran synthetic, so I put Mobil 1 syn oil in. It started making th...