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importdoctor, ASE Certified Technician
Category: Car
Satisfied Customers: 9974
Experience:  ASE Certified, 10+ years experience
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Saturn: my SaturnSL2;no more vibration the rotors..GM..dipstick

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Hello are things with you? Ok let's chat about my SaturnSL2;no more vibration the rotors were here is where you come in of course I read your employment history:worked with GM & saturns-i like my vehicle & frankly I at a turning/decision point-based on your knowledge of that vehicle's engine1.9Llo dohc mine is at 146+k now;this engine has passed it's trouble free years but anyway Peter based on your experience whatever data that you may recall I would like to know about it's reliability say over the next 100k miles..I have now added BG moa to my Castrol synblend oil it really makes a world of difference,however it's added if my dipstick gets a little low.I have had a lot of advice at this site but you are really a GM expert.-Regards raycris2
Submitted: 8 years ago.
Category: Car
Expert:  importdoctor replied 8 years ago.

Hello again Raygen-

THank you for requesting me (again Wink). Things are going well for me thank you for asking.

Yes I have worked on these cars for a number of years, I was the lead technician at a Saturn dealer in my area for about 4.5 years before I switched to the toyota/Lexus dealers.

Very happy to hear that the last issues with vibration and braking are now resolved, I was hoping that this would completely remedy this for you.


So you are inquiring about reliability until roughly 250,000 miles....are you referring to just the engine specifically or overall components of the vehicle?refresh my memory here and elaborate a little for this an automatic or manual transmission? DId you purchase the car new???


We had discussed some possible issues a while back regarding engine gelling....what ever became of that?

Customer: replied 8 years ago.
reliability until roughly 250,000 miles....are you referring to just the engine specifically..yes please refer to my 2nd question concerning the piston soak idea it's an Auto; I am the only owner: another plus is I am the only person traveling in this vehicle 95% of the time so as not to over tax the engine:I would like to do some more to this care if I can feel secure about the reliability on the engine itself ...
Expert:  importdoctor replied 8 years ago.

Thank you for the reply.

As far as reliability I have no concerns with the proper maintainence being performed, I know you are religious about keeping the car properly maintained.

The very slight loss of oil level is my only concern at this point.....yes the piston rings do tend to stick over time on this car and results in oil bypassing the rings and entering the combustion chamber, this results in oil consumption as well as spark lug fouling over time depending on the severity of the oil leaking past the rings and depending on how many cylinders it is effecting.

The ulitmate solution to this concern is to have the engine partiallt rebuilt....this is not a cheap option however one you may want to consider if you plan on keeping the car on the road for another 100,000 miles. During a rebuilt the pistons will be cleaned and new rings installed as well as the cylinder walls in the block rehoned to eliminate this solution.

THe only other way to reduce and possibly resolve this issue is a method that I have had moderate success with in the past. Basically what I do is rotate the engine to top dead center, remove the spark plugs and pour GM top engine cleaner down into each cylinder to flood the cylinder with very strong cleaner before storing the car over at least a 12 hour period, the cleaner will saturate the cylinders and break up the some of the deposits and help clean the grooves in the pistons that retain the rings. In some cases where the carbon and oil form a bond to the rings and the substance has not completely hardened this will allow the rings to break free once the cleaner is sucked out and the engine started. As I stated this is not a miracle solution, it's a possible solution that I have had moderate success with.

If you have no timing chain noise from the engine and no leaks then you can still get by on just topping off the oil for now, I recommend as always that you check the oil level every time that you refuel.

Let me know if I can elaborate on this or if you have any specific questions.

Aside from slight oil consumption this is a good motor, they hold up very well compared to the single cam engine used in the SL1 that had a list of known issues.


On a side note you opened a second question requesting me, there is no need to have 2 open question open, we can cover all your concerns right here in this thread. Thank you.


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