YenkoChevelle69 Posted March 21, 2008 Report Share Posted March 21, 2008 I have 85K and the run m1 0/40 oil. When I start it up the valve train has so much chatter, but eventually quiets down. What really concerns me is that when I romp on it can really hear the valvetrain making noise. Is this safe? I'd hate to blow this thing up over something stupid. Am I the only one with this issue? Quote Link to comment Share on other sites More sharing options...
70chevy03ss Posted March 21, 2008 Report Share Posted March 21, 2008 why do you run 10/40?? I run 5 w30 and it runs fine.. just asking Quote Link to comment Share on other sites More sharing options...
supersub Posted March 21, 2008 Report Share Posted March 21, 2008 Piston slap is what it sounds like. Quote Link to comment Share on other sites More sharing options...
Jaymz Posted March 21, 2008 Report Share Posted March 21, 2008 Piston slap is what it sounds like. basically all chevys are known for that sooner or later... my camaro has it really bad. IMO 5/30s for break in.. after 55k i changed to 20/50 royal purple.. Quote Link to comment Share on other sites More sharing options...
Chevy. Posted March 21, 2008 Report Share Posted March 21, 2008 basically all chevys are known for that sooner or later... my camaro has it really bad. IMO 5/30s for break in.. after 55k i changed to 20/50 royal purple.. royal purple is great great stuff! for about 10 minutes of use. when it heats up it turns into water giving you no protection its really made for Quote Link to comment Share on other sites More sharing options...
NTMD8R_SS Posted March 21, 2008 Report Share Posted March 21, 2008 royal purple is great great stuff! for about 10 minutes of use. when it heats up it turns into water giving you no protection its really made for It's made for what? Quote Link to comment Share on other sites More sharing options...
Badkarma Posted March 21, 2008 Report Share Posted March 21, 2008 (edited) royal purple is great great stuff! for about 10 minutes of use. when it heats up it turns into water giving you no protection its really made for Your basically right, when it comes to the over the shelf SAE stuff from pep boys or whoever. Use the RP racing, whole diffrent animal. Its all I ever use. Edited March 21, 2008 by Badkarma (see edit history) Quote Link to comment Share on other sites More sharing options...
YenkoChevelle69 Posted March 21, 2008 Author Report Share Posted March 21, 2008 I am running Mobile one 0w 40 right now. Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted March 21, 2008 Report Share Posted March 21, 2008 piston slap and valve train noise on LSX motors is common, especially when they have some miles on them........as long as you do regular oil/filter changes you should be fine Quote Link to comment Share on other sites More sharing options...
Chevy. Posted March 21, 2008 Report Share Posted March 21, 2008 It's made for what? sorry about that i didn't finnish my sentance. RB is really made for making a pass or two on the track. its no doubt it gives you a few extra hp when the stuff is fresh, but after it heats up it litarly turns into water. sometimes when sitting at a red light after you have been driving for a while, it will build up on the heads an burn after you take off causing smoke to come out of ur exhaust, it even can do this on start up. Quote Link to comment Share on other sites More sharing options...
NTMD8R_SS Posted March 21, 2008 Report Share Posted March 21, 2008 Oh. Hmmm I guess next oil change ill be going whit M1. synthetic. Quote Link to comment Share on other sites More sharing options...
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