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Hello ET, I value your input and would appreciate knowing which oil filter you prefer. Also, air filters such as K&N reduce intake pressure drop but do they create greater risk for contamination issues. Thanks in advance for your response.
I've come to a complete agreement to trust my oil life % as to when it's time to change my oil. But the question I have now is the oil filter going to last as long as the oil between changes? How long should the A/C filter last?
I have seen the OLM indicate 35% oil life left after a single weekend of use--this mileage took place on a road race track in 103dF temperatures and a fuel consumption rate of less than 6 MPG. At this rate, the OLM wanted the oil changed at 450 Miles!
I have seen the OLM still have 9% left at 18K miles. "Cold" starts at 89dF, 30 miles of freeway cruising (once in morning, once in the evening) ; with a handfull of 1500 mile trips at 65 MPH on cruise control.
Then I take it you would go by the Oil % on the DIC as being fully accurate and to follow it as a guide to changing oil instead of the 5,000 mile for fully synthetic?
From: "This is not a psychotic episode, but a cleansing moment of clarity."
Originally Posted by LS WON
Then I take it you would go by the Oil % on the DIC as being fully accurate and to follow it as a guide to changing oil instead of the 5,000 mile for fully synthetic?
I've read enough about this topic from people who know what they're talking about (tip of the hat to ET) to say with confidence that I would.
Or, "You be changing" oil way sooner than you might need to. Many people on this and other Corvette forums that I read have done oil analysis tests that show the GM algorithm for oil life is very good. I go just a bit further and change the filter out twice during the 100% span.
It seems to be that alot of members here don't have confidence or trust in the equipment that comes with the Corvette or trust GM as a whole perhaps thinking GM has these longer intervals leading to earlier failure outside the warranty period when YOU will have to foot the bill to the repair but during the warranty period should be ok. Is this warranty period being used as the baseline of never having to change fluids or to go longer on fluid changing?
This would also apply to never having to change the transmission fluids and rear end fluids unless there is a leak as stated in the manual. Just like engine oil & filter (catching metal shavings is good thinking during break in wouldn't this apply to the rear end and transmission just like oil break in as one would want to rid the shavings in the tranny and differential is a GOOD thing?)
One would normally think these parts will last longer with regular interval changes beyond the warranty coverage perhaps that is what the GM wants so they don't have to foot the bill for your repair.
You will have to buy another part from them or a new car. If the component lasted too long wouldn't that be a conflict of interest? There would be no need to sell new cars or have higher profits through service and parts services? Proffits would go down if every component lasted too long because there wouldn't be a need for replacement for such a long time.
I've read enough about this topic from people who know what they're talking about (tip of the hat to ET) to say with confidence that I would.
What are they talking about? It seems the majority aren't going by oil % and would prefer to put in a different transmission fluid and rear differential fluid.
I spend 8 hours a day here since I retired...trying to help people, and give back to the community for a lifetime of commitment to automotive technology. I get 20 to 40 PM's a day///I've posted over 10,000 tips and comments, sometimes laced with my acid humor... it's done purposely to create this Evil Twin image.. those that know me intimately know that it's just a character I play, but the help is genuine... Of Late, I am spending more time defending myself, and my credentials then I spend in helping people.. And its getting very old... in my five years here I have answered the same questions over and over without issue, I recognize that new people are constantly coming here. In lue of all the bad info that can be found here, I try to keep it level and correct... I care too much about people that just got their first C5 and I can still put myself in their place..I got my first corvette at 18 and that was 45 years ago. I have always tried to make my tech tips in such a way to excite their passion for this car... too many people "TRY" to get in my pants and offer their insight from something they heard from a girl they once dated who's brother use to work at a dealership....
Thx for the great info ET. Coming up on my first oil change and wanted to find out how accurate the monitor is. I appreciate all the in-depth info and expertise you post, even on simple subjects such as an oil change.
Trust the oil life indicator but read the owner's manual as well. Somewhere back up the thread was mention that oil life showed only about 35% or something after maybe 400 miles, BUT, the car had been raced in a high ambient temperature. One normally would not change oil in less than a thousand miles. In this case it was warranted and the oil life indicator was going to call for it. In like fashion, another indicated 18,000 miles for the projected oil change based on the oil life indicator. I'm not sure I trust it THAT much. Change the oil every year whether it needs it or not.
Trust the oil life indicator but read the owner's manual as well. Somewhere back up the thread was mention that oil life showed only about 35% or something after maybe 400 miles, BUT, the car had been raced in a high ambient temperature. One normally would not change oil in less than a thousand miles. In this case it was warranted and the oil life indicator was going to call for it. In like fashion, another indicated 18,000 miles for the projected oil change based on the oil life indicator. I'm not sure I trust it THAT much. Change the oil every year whether it needs it or not.
Charlie
It depends on how you drive. I remember reading in the manual OLM goes by heat and it will tell you 600 miles prior to when you really need to change it. Not based on mileage but on your type of driving.