How oil viscosity affects bottom end life – forum gas utility


That is a difficult question to answer. If you talk to an engine builder(professional builder/machinist), they have a different concept that makes good sense. The pro machine shop guys I’ve used over the years say it’s the molecular strength of the oil that is important. This is not dependent on VISCOSITY. It’s what is in the oil make up that’s important. I’m not a total expert on this situation so I’ve always relied on my machinist.

Being in an around racing for MANY years, I’ve seen many different thoughts on this issue. gas bubble in throat Oil flow/circulation is critical for good internal engine lubrication. Now if you can wrap you thoughts around this, good oil flow/circulation is critical for longevity. I used to use a heavy oil viscosity also till I found out about molecular strength. That meant no more 20/50 oils and a switch to full synthetic to achieve complete lubrication inside an engine and LESS RESISTANCE FROM A HEAVY WEIGHT CONVENTIONAL OIL

One circumstance I ran across several years ago at the BRAINARD International Raceway was chatting with a few STOCK ELIMINATOR DRAG RACERS. These guys were running very light weight oils (10w) for good circulation and less drag on the oiling system(this allows less internal resistance from internal moving parts that get lubricated). It was at that point I threw away all my 20/50 oil a did the switch. gas prices going up to 5 dollars I did consult a few good machinists about different oils at that time. As far as which oils, the synthetics have the best MOLECULAR STRENGTH. So I switched and have not looked back. I’m running MOBILE 1 full synthetic 10w30 and it’s been all good. The best part of synthetic oils in my thoughts are the detergent action it has over conventional oils. electricity drinking game The cleaning action of good synthetics is almost a must for longer engine life.

On another note the "hard core guys" would use oils made from PENNSYLVANIA CRUDE oil. For me, the better flow of a good synthetic along with the stronger molecular strength is the cats’ meow….. I switched to Mobile one and haven’t looked back. gas tax in washington state For my every day drivers(couple of hondas), I use synthetics also. Better cold flow and stronger molecular strength is about as good as it gets.

Some time after that line of thinking, a local TOP SHELF engine builder/machinest which did a few of my DRAG RACE engines(back in the day), explained to me about MOLECULAR STRENGTH of oils. Apparently the good synthetic oils out there today have that. Because I trusted this guys years of engine building of all types, I went with his mind set and haven’t looked back. Another good thing with synthetics is it’s cleansing action. And we don’t want any internals sludged up….do we.

There is a small oil manufacture of a top shelf oil. gas lighting It’s called BRAD PEN oil. VERY GOOD AND VERY EXPENSIVE. Mostly used in MAXIMUM PERFORMANCE race engines. That oil is most likely over kill for most of us. Since I switched from MOTOR CRAFT SUPERDUTY OILS to Mobile one, I haven’t seen any major changes…..They both worked well but the Mobile 1 does keep the engine internal parts cleaner. So I’ve been a mobile 1 used for a few years now with no issues. FOR ME, I also change my oil before it gets close to being dirty. Typically between 1500 and 2000 miles at most. I also did the same with conventional oils. Maybe it’s too over-kill but I have a lot of time and $ in my car and will do the best I can for longevity. When I look inside the valve covers, I can see CLEAN CAST IRON PARTS and Roller rockers…..and that puts a smile on my ugly face…..and my car most likely likes this and hopefully will reward me for taking care of it… I do push it hard(6500 rpm shift points wide open throttle in drive thanks to a "DYNO BRIAN" pcm tune). gas tax in new jersey I also believe most oils on the market today will do the job for the average JOE BLOW or mom’s suv! And shorter oil change intervals is also a good thing…….nothing better than clean engine internals… Jake