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By asilverblazer · Posted
Topic: OCI, not when but why? Have you considered that just because there is limited documentation on GM's programming of the OLM system that it is not a sign of it's simplicity but a protection of intellectual property? We both agree the system's published parameters are too limited to present an accurate picture of oil quality. I am not discussing my oil change routines in this comment, I am discussing the parameters of the GM OLM; a key component of "OCI" when and why. You know what I find interesting? GM trucks, discussing things relevant to those trucks. If free conversations are not allowed in threads you start I suggest having a discussion with a moderator to have them grant you authority to police and suppress the free exchange of thoughts on your topics accordingly. Alternatively, if you only want to talk about oil without distractions I suggest bobistheoilguy.com or starting your own blog. Carry on your discussion of "Engine Wear and ISO 4406" -
And I was thinking of this factor as well in that if a customer does not well maintain their vehicle ( which means going by the manufactures schedule in most cases ), that vehicle in theory by the time they trade it in or sell it privately will have potentially a shorter life span on some major components as a result and so that vehicles life either cut short or a lot of parts thrown at it to keep it on the road. In either case the manufacturer wins because its either selling more parts or that vehicle has hit the grave yard and becomes a win win for the manufacturers. So indeed the salesmen love a scenario like this .. yes yes, treat that vehicle I sold you like garbage so I will be seeing you sooner then you think for your next new vehicle purchase ! 😆 OnTheReel, I looked up my OLM percentage for the last oil change that was done with 2500 miles on it and it read 48% and that was an interval through the winter so more idle time and so on and while not scientific, when I changed the oil it had this weird color to it that I can't say I have seen before and to keep in mind that I burn dyed fuel but so does all other gas vehicles I use and I have to wonder if fuel dilution and allowing more of that dye into the oil was showing up or what but it sure didn't jump out at me as saying I was dropping the oil way too soon. Instead it made me think of what a local long time mechanic had commented on with my truck that he recommended I change the oil every 2500 miles as the number one thing to keep this engine type in good mechanical service. But again its not like that oil was sent to a lab to see where its life was at so this is only anecdotal. -
By richard wysong · Posted
$4.65 on the turnpike, diesel $5.79, local $3.87, hi-way $3.70s -
The less maintenance sales pitch falls right into their plan, we sell parts and vehicles. Real simple mode of operation, you want to drive it a long time change the fluids more often. Has worked for me over 50 years. -
I didn't mean to seem dismissive of hurting mpg. Lifting the truck while still using stock tires would hurt mpg too, I was just saying that both engines have plenty of low end combined with a low first gear that drivability would be fine with stock gears. Towing with a significant lift sucks regardless of engine, transmission and gear ratios. And suspensions that allow extra travel don't carry extra weight well. If you're using the truck to tow or haul near capacity a big lift isn't great and reduces the the truck's capacity and these trucks are too heavy and long to be good for serious off road.
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