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Maintenance Intervals

DonD

Seasoned Member
Joined
Aug 31, 2023
Messages
330
Location
Central TX
V-Series Cadillac(s)?
2023 CT4-V Blackwing
I like to baby my cars and I think the information in the owner's manual means you're letting the car go too long between oil and air filter changes.

I'd like some inputs. Don
 
Oil and filter change every 5k miles. I like Mobil 1 Extended Performance 5W-30 and get the oil filters from tapout's website (insanely fast shipping times)

I blow out the air filters with a compressor thoroughly every time I change the oil. They are the reusable green element ones. If I were using the OEM paper filters, I would swap them for fresh ones at the same interval for peace of mind.
 
Here is what I do:

Engine air filter and cabin air filter- replace once a year
Engine oil & filter - replace every 5-7k miles
Auto/manual transmission- replace every 40k miles
Rear differential- replace every 40k miles

Your opinion may vary.
 
Oooh, the cousin to "which oil is best". 10's of 1,000's of data points (used oil analysis) confirm the OLM is really good. Mine isn't a daily so it's once a year, but for the DD I just follow the manual because that is what most people do and most peoples cars last a really long time.
 

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