I run 15W-40 Shell [B]Rotella in my Volvo because it's an old turbo car and the enthusiast community has had success with it.
Volvo parts reviews
I had a cheap Volvo S40 commuter with bad valve stem seals back in 2011. I was about to tear into the engine, when a trusted friend/parts manager/guru recommended I try a can of Liqui Moly Motor Oil Saver as a last ditch effort. Within a couple drives the symptoms were gone, and last I heard the car is still running strong today.
Coworker made this for me after I spent the whole day replacing the cat on a new XC90
currently on Kroon Oil 10w40 non synthetic. Volvo oil filter, 10k km intervals
I typically use a Volvo/Mann filter, with 4K intervals.
Those alternators are damn near bulletproof, it’s the voltage regulators that crap out. If it were me, I’d keep the OEM unit, replace the pulley, and swap out the voltage regulator while I was at it.
Continental makes a good kit for that car, that has all the pulleys and the water pump.
I decided to order the OEM Bosch coil off of FCP Euro. Same issue about a 1/4inch too long. Being kind of annoyed and noticing that they're pretty much identical decided to pull the rubber boot off the old and swap it with the new one.
The car now runs a lot better, however, I think the slight difference in ignition coils is making the car run slightly choppy at high rpms
Mine has been unreliable. The timing belt blew, both lower control arms and shocks needed to be replaced, and also both wheel bearings. Just my experience, I got mine at 130k and I'm at 155k now. Im getting rid of it. \n\n\nSo if anyone wants a c30 with a ton of work done feel free to message me lol. Its perfectly good now, fun to drive and I bet thats about everything that needed to be replaced.
Thing lasted 3 months, and really only lasted that long because I spent virtually every weekend at pick-a-part getting parts to keep it on the road. Some of it was my fault (I slightly crashed it into a guard rail), but the rest was fuel pumps, bad injectors, stupid little things like the speedometer and rear antenna, and the AC which never worked.
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