Hi all,
I am curious to know whether switching to High Mileage oil fixed anyones consumption problem, OR if anyone who is having minor oil consumption issues like me (1 quart burned every 5,000-7,500 miles) switched to high mileage oil and found that HM oil did NOT fix their consumption problem...
---back story---
My 04 Silverado with 170,000 miles started burning a small amount of oil around 130,000 miles or so.
With 5w30 it would burn around 1qt in 5,000 miles. With 10w30 it seems as of now i'm burning 1 qt in about 7,500-8,000 miles.
I like to do 6,000 mile conventional OCI's and 10,000-12,000 mile synthetic oil change intervals (i mostly use synthetic but stopped since the oil burning started becaise i cant get the full 10-12k out of the OCI like i'd like to)
GM's position is that 1qt of oil consumed every 2-3k is normal, but MY position is that if a vehicle is burning oil something is wrong.
I'm trying to hunt down the cause of the problem and I noticed immediatley that switching to 10w30 (OEM reccomends 5w30) slowed down the consumption considerably.
I also put a inexpensive PCV catch can on the truck to see if perhaps the oil is going out the PCV line into the intake. I know from removing the intake for a repair that some oil is definitely going there because it was very sticky and dirty with oily residue.
When changing the water pump i found that a very small amount of oil/grime had caked up around the front crank shaft seal/timing cover
In a pinch on my second previous OCI I was down about a quart so i threw in 1 quart of generic high mileage oil, drove it for maybe 500-900 miles then changed to 10w30 conventional to get a baseline for current oil consumption...its still consuming oil at the same rate mentioned above.
Am I a candidate for high mileage oil or any type of oil that stops oil burning really...is what im after.
I am curious to know whether switching to High Mileage oil fixed anyones consumption problem, OR if anyone who is having minor oil consumption issues like me (1 quart burned every 5,000-7,500 miles) switched to high mileage oil and found that HM oil did NOT fix their consumption problem...
---back story---
My 04 Silverado with 170,000 miles started burning a small amount of oil around 130,000 miles or so.
With 5w30 it would burn around 1qt in 5,000 miles. With 10w30 it seems as of now i'm burning 1 qt in about 7,500-8,000 miles.
I like to do 6,000 mile conventional OCI's and 10,000-12,000 mile synthetic oil change intervals (i mostly use synthetic but stopped since the oil burning started becaise i cant get the full 10-12k out of the OCI like i'd like to)
GM's position is that 1qt of oil consumed every 2-3k is normal, but MY position is that if a vehicle is burning oil something is wrong.
I'm trying to hunt down the cause of the problem and I noticed immediatley that switching to 10w30 (OEM reccomends 5w30) slowed down the consumption considerably.
I also put a inexpensive PCV catch can on the truck to see if perhaps the oil is going out the PCV line into the intake. I know from removing the intake for a repair that some oil is definitely going there because it was very sticky and dirty with oily residue.
When changing the water pump i found that a very small amount of oil/grime had caked up around the front crank shaft seal/timing cover
In a pinch on my second previous OCI I was down about a quart so i threw in 1 quart of generic high mileage oil, drove it for maybe 500-900 miles then changed to 10w30 conventional to get a baseline for current oil consumption...its still consuming oil at the same rate mentioned above.
Am I a candidate for high mileage oil or any type of oil that stops oil burning really...is what im after.
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