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BG MOA V70-XC70 1999

Hello All,

Our 99 V-70 now 127K has for a long time had some startup valve train noise, a nasty sounding growl that lasts a couple of seconds. However about 500 miles ago the growl seemed to get worse and it also developed a tick that just wouldn't go away. I'm not sure that the tick occurred at highway speeds but at idle it was always there.

So, I changed the oil (about 2K miles early) and although I'm not a big fan of additives, added a Lucas engine treatment product cause I've had good luck with their steering rack seal sweller on my 240's. Nothing changed, startup was a hellish sounding affair and the tick was still there.

I called my local Volvo guru figuring it's time to make an appointment, but instead and in his usual cantankerous manner quizzed me on what kind of oil I had been using, commenting that he wasn't terribly impressed with synthetic (I've been using Wal-mart Lubritech). Told me to change the oil again, indicating that STP, Lucas or other similar additives undesirably increased the viscosity, and instead use BG MOA with conventional oil. He said he wasn't a big fan of additives, but he's seen some miraculous results with the BG stuff which he thinks among other things cleans some of the gum or varnish deposits.

So, I figured, wth, what did I have to lose. It's amazing, but the startup "growl" and tick are completely gone. Just thought that in the interest of hopefully helping someone else, they can give this car elixir a try.

Marty Wolfson








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    BG MOA V70-XC70 1999

    I am a big fan of synthetic oils, they leave fewer deposits inside the engine and PCV system.

    Your crankcase was dirty and the BG MOA helped clean it. That is why the hydraulic lifters were ticking at startup, the oil chanels were dirty. Not sure about the 'growling" noise.

    I also tell folks to add a can of AutoRx and then drive the car for about 1,000 miles to clean out the sludge from the PCV and rocker arms. It works. But should only be used once.

    While the BG product might have worked, your engine has other problems. You need to get the motor oil hot when you drive it so that it can burn off the deposits instead of letting them turn into sulphuric acid.

    Klaus
    --
    Always willing to listen, just not able to take direction.








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      BG MOA V70-XC70 1999

      Klaus,

      Thanks for your info. I've been using synthetic oil on the V-70 and my 3 240's for many years now and presumed that synthetic is a much cleaner operating oil. It's just odd that there would still be valve train deposits. I've found that on the 240's, I no longer need to clean the flame trap or other components of the PCV system. The throttle body as does not seem to "coke" up.

      Last weekend, we took a 300 mi round trip with the V70 so I'm hopeful that these harmful deposits are at least reduced. If I hear valve train noise again I'll give the AutoRx a shot.

      Thanks again for your thoughts.

      Marty







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