Posted by RN on March 04, 2015 at 12:33:27 from (66.188.143.138):
In Reply to: Re: NOS 5w 30 oil posted by jimg.allentown on March 04, 2015 at 04:50:49:
Oil vapor get recycled/burned through the emission control systems- PCV leads to intake manifold instead of venting to outside air like pre 1966? engines. Zinc additives act like lead additives in gas to 'poison' /coat the catalytic convertor Platinum pellet/sponge beds Exhaust valves, intake valves through guide clearance, piston clearance when cold is another route for oil to get into exhaust system. Diesel spec oils meant for engine without cats still have the zinc additive that is a good 'pressure' lube for flat tappets and gear teeth- it is the default oil for on the road needs for many motorcyclists, 15-40 Rotella is the early Honda recommendation for the older 10-40 car engine oil no longer available in many convenient places. I use it in early Goldwing since the unitary design uses same oil in transmission and common crankcase. Old 5-30 f cleaned likely still good for snowthrower engine, splash lubed small engine in cold, light duty water cooled engines like parade tractor. RN
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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