Something interesting, 84 Civic / Red line oil

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7,485
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S California
I've just overhauled my 84 Civic and have been looking for a new auxiliary valve rocker arm for the rear cylinder but have not been able to find one, yet. It makes a slight ticking noise that you can change in pitch by pressing on the rocker while the engine is idling. Today I changed the oil. Previous oil was 5w-30 PP and to use up my stash I used 0w-30 Red Line this time. The ticking noise is now very difficult to hear now and at times you can't hear it at all. I was surprised that an oil would make that much of a difference. I've heard people say their engine runs smoother with a certain oil but have never experienced such a difference.
 
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Saskatoon canada
Redline oils tend to be on the thicker end of the grade and use little to no viscosity index improvers which may help too. If I could afford it I'd use nothing but redline fluids exclusively. They are probably overkill in anything but severe service/racing/mudding and trails etc. Their gear oils are amazing.
 
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Ontario, Canada
Ester based oils have this effect. They are polar and "build up" more on parts. For example, I recently split two identical gearboxes, one filled with mineral oil and the filled with ester gear oil. The latter box had a noticeably thicker, visible layer of oil on all the parts that remained well after disassembly whereas the mineral (grII+III?) coated parts quickly dried off. Then on top of the superior base oil, you have Redline's heavy handed approach to FM too thumbsup
 

cp3

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2,645
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Kitchener, Ontario, Canada
Originally Posted By: OneEyeJack
FM?
Friction Modifiers Reline 0w30 is only listed at 3.2 HTHS, not really that much heavier than PP 5w30 which should be at least 2.9. Last TDS I have it listed on was 3.0.
 

OneEyeJack

Thread starter
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You don't think an HTHS of 3.2 is "good enough"? One could always go to their 5w-30 for an HTHS of 3.7 if that would make any difference.
 
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Maricopa Arizona
Originally Posted By: cp3
Originally Posted By: OneEyeJack
FM?
Friction Modifiers Reline 0w30 is only listed at 3.2 HTHS, not really that much heavier than PP 5w30 which should be at least 2.9. Last TDS I have it listed on was 3.0.
According to the figures you listed this is nearly a 10% difference this is quite a bit. Especially considering the hairsplitting done around here.
 
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Florida
I'm surprised that there is no way to get a lash adjusting screw and locknut, fit a bronze bushing through the center of the rocker arm, and resurface the part that touches the cam. Unfortunately, I don't know what that all would cost, and what the cost/benefit analysis is.
 

cp3

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2,645
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Kitchener, Ontario, Canada
Originally Posted By: OneEyeJack
You don't think an HTHS of 3.2 is "good enough"? One could always go to their 5w-30 for an HTHS of 3.7 if that would make any difference.
Good enough for a freshly overhauled engine? Personally, I would think so. By only I was referring to the difference to PP which yes is almost 10%, a large margin here but I'm over the hair splitting. I'm just not sure that 10% would make a big audible difference with a wonky rocker....maybe. Maybe a combination of jrustles idea and the heavier oil in combination....
 
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