Update: Just changed the oil in the Corolla today with Maxlife. I am eager to see if the consumption slows over time.
Oil for next change on '99 Corolla
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If consumption doesn't slow try motor oil saver made by liqui-moly/lubro-moly. It can be found at napa. It will fix the issue,if its fixable,and its cheap
Its not going to. No oil, no additive can tunnel through the rock hard carbon deep inside the piston's undersized oil return holes. Once the holes are carbonized its over. No oil, no additive can enlarge and add additional return holes (the fix). I know because I had a 99 and a 2000. Removing the pistons and dunking in old brew berrymans chem-dip for a week doesn't work. Its gotta be drilled out. I spent 2 years in a Toyota forum with hundreds of other 98-02 owners. Only a handful had any positive results. By positive I mean an extra 1k on the oil burning. Extra 1k by starving the rings with thick oil, its the only option other than teardown.
Despite the comments above I would consider wasting a can of Kreen on it first. While I haven't specifically treated this engine I have seen what Kreen does to coke in the rings of old pistons.
It dissolves coke like butter.
It dissolves coke like butter.
Originally Posted By: LeakySeals
Its not going to. No oil, no additive can tunnel through the rock hard carbon deep inside the piston's undersized oil return holes. Once the holes are carbonized its over. No oil, no additive can enlarge and add additional return holes (the fix). I know because I had a 99 and a 2000. Removing the pistons and dunking in old brew berrymans chem-dip for a week doesn't work. Its gotta be drilled out. I spent 2 years in a Toyota forum with hundreds of other 98-02 owners. Only a handful had any positive results. By positive I mean an extra 1k on the oil burning. Extra 1k by starving the rings with thick oil, its the only option other than teardown.
LeakySeals is exactly correct as his analysis is what deep down I know is wrong with the car. I was running Mobil 1 in the Corolla prior to the MaxLife--and really like that oil--but, it was becoming expensive to continually top up the oil at $7 a quart. At least the MaxLife is a little cheaper.
Its not going to. No oil, no additive can tunnel through the rock hard carbon deep inside the piston's undersized oil return holes. Once the holes are carbonized its over. No oil, no additive can enlarge and add additional return holes (the fix). I know because I had a 99 and a 2000. Removing the pistons and dunking in old brew berrymans chem-dip for a week doesn't work. Its gotta be drilled out. I spent 2 years in a Toyota forum with hundreds of other 98-02 owners. Only a handful had any positive results. By positive I mean an extra 1k on the oil burning. Extra 1k by starving the rings with thick oil, its the only option other than teardown.
LeakySeals is exactly correct as his analysis is what deep down I know is wrong with the car. I was running Mobil 1 in the Corolla prior to the MaxLife--and really like that oil--but, it was becoming expensive to continually top up the oil at $7 a quart. At least the MaxLife is a little cheaper.
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To Steve's point, doesn't hurt try some of the additives/methods mentioned. I did hoping to get lucky on the cheap. Maybe you will be the one that frees the holes where no one else has. One positive is the toughness of your engine. You can ignore the worries of the thin oil crowd, your engine can run thick oil for years with no issues, no noticeable impact to MPG. If you can get Maxlife in a 10w40 that should help. I won't recommend 20w50, but there are people in hot climates that have been using it for years at mileage over 200k. Blending/topping off with 20w50 in the hot summer months of TX is something I would consider.
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