Hello. Welcome to Just Answer. Please allow me to assist you in your question.
Hello, Ok please assist me
Let's take your issues one at a time
Regaring the valve cover gaskets...90,000 miles is about right.
Replace spark plugs. That too should be done at 90,000
Lower control arms, etc? I'd have to have some visual proof that they are worn/bad/etc.
Are the tires wearing unevenly/the alignment cannot be set properly? Only then would I consider the lower arms
When the 90,000 miles service was done, should the valve cover gaskets have been replaced at that time or should they have told me about it, or was it included in the 90,000 miles service?
Telescope motor...Not a common failure unit, but, if it is used a lot, it is possible.
Valve cover gaskets are not normal 90K maintenance items. If they are not leaking, they do not need to be replaced
I see the VC gaskets starting to seep around 90-100K miles. Replace them only if they are leaking. It is a rather time consuming job.
The VC gaskets, can smell the oil, therefore they are leaking. If the VC gaskets are leaking would that mess up the spark plugs?
The VC gaskets....if you can smell oil, replace them. The oil leaking from the VCGs will not mess up the function of the plugs. Note that the plugs are routine replacement items.
To replace the VC gaskets and the spark plugs, what would be an estimated price to do these 2 jobs?
I would expect to pay about 10 dollars apiece for the plugs, about 100 for the gaskets, and maybe about 4 hours labour for the work, times your area's going labour rate.
they may charge you for a few incidentals, like cleaners and the like.
A note on the lower arms. I have not replaced any lower arms in the recent past. I would have to be convinced that the arms need replaced.
The prices provided are rough estimates; I do not have the actual part numbers in front of me to be exact.
With the oil being changed with 113,000 miles and before then, 109,000 miles should they have detected that at least one of the VC gaskets was leaking during the oil changes?
A good dealership service tech is supposed to look for, identify, and alert the customers to upcoming needs when the vehicle is in for service.
OK, thanks for information, which has been very helpful. Have a good day!