Originally Posted By: LS1MAN
I have an 02 DeVille(with 104k on it) that is sucking up 1qt of Mobil1 5-30, I want to switch to some type of high mileage oil. Can't decide on what to go with my 3 choices are Mobile 1 high mileage, Valvoline Syn high mileage, or regular dino Valvoline high mileage. Would their be any disadvantages with going with the regular dino, since the car has been on a M1 diet since new. It's just killing me to buy 8qts of M1 to go 3k. I can get the Valvoline dino HM for $13.50 for a 5qt jug. Looking for info on what you guys think. This is my first post here, long time lurker..but this DeVille's oil consumption is killing me.
If you want to run an HM oil I highly recommend Valvoline Maxlife. Just a note however. They do not offer conventional Maxlife. It is either a blend or full synthetic.
I agree with another poster that said this may be due to stuck rings, a bad pcv, valve seats, etc... You could replace the pcv( actually should replace is more accurate )and then try something to free up the stuck ring(s) 1st. Many will recommend Auto-RX which is fine. I personally would try a Seafoam treatment 1st as it is cheaper( $8 )and much quicker( 200-300 miles of driving either frees it or it won't vs 5000+ miles and 2 OC's with A-RX ). If the Seafoam doesn't work then you could try A-RX to rejuvinate the seals.
Also, for whatever this is worth, you hear a lot of stories of increased oil consumption using M1 5W-30 that goes away with a swap to another brand of oil. Been hearing that for a LONG time. Not bashing M1 just another thing to consider that MIGHT be the cause/cure.
I have an 02 DeVille(with 104k on it) that is sucking up 1qt of Mobil1 5-30, I want to switch to some type of high mileage oil. Can't decide on what to go with my 3 choices are Mobile 1 high mileage, Valvoline Syn high mileage, or regular dino Valvoline high mileage. Would their be any disadvantages with going with the regular dino, since the car has been on a M1 diet since new. It's just killing me to buy 8qts of M1 to go 3k. I can get the Valvoline dino HM for $13.50 for a 5qt jug. Looking for info on what you guys think. This is my first post here, long time lurker..but this DeVille's oil consumption is killing me.
If you want to run an HM oil I highly recommend Valvoline Maxlife. Just a note however. They do not offer conventional Maxlife. It is either a blend or full synthetic.
I agree with another poster that said this may be due to stuck rings, a bad pcv, valve seats, etc... You could replace the pcv( actually should replace is more accurate )and then try something to free up the stuck ring(s) 1st. Many will recommend Auto-RX which is fine. I personally would try a Seafoam treatment 1st as it is cheaper( $8 )and much quicker( 200-300 miles of driving either frees it or it won't vs 5000+ miles and 2 OC's with A-RX ). If the Seafoam doesn't work then you could try A-RX to rejuvinate the seals.
Also, for whatever this is worth, you hear a lot of stories of increased oil consumption using M1 5W-30 that goes away with a swap to another brand of oil. Been hearing that for a LONG time. Not bashing M1 just another thing to consider that MIGHT be the cause/cure.
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