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piston slap 2

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90
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vrookie
Posts: 14
Joined: 7 February 2012
Year and Model: 760 turbo 1987
Location: Atlanta Georgia

piston slap 2

Post by vrookie »

Thanks jimmy57 for your very in depth response to my problem.I will take your advice but I ke will trying to lessen the noise, I'm thinking about changing my from 10w30 high mileage to10w40 high mileage oil will this help. I think the old girl has too much dignity to ride around like that without me trying tohelp.


Thanks again
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jimmy57
Posts: 6694
Joined: 12 November 2010
Year and Model: 2004 V70R GT, et al
Location: Ponder Texas
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Post by jimmy57 »

Thicker oil does help as it does cushion better. You could even go 15w40 which is a diesel oil but exceeds all requirements for that engine. DO not use 20w50. 20W50 used to make Volvo techs a lot of money. It has far too great of a tendency to form a deposit on underside of pistons that falls off and clogs the oil pickup screen.
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