blah blah said:
If he's changed his oil every 3000-4000 miles it wont likely fail
anytime soon. With its age he can probably run it until the wheels fall
off for what its worth. Just stick with regular maintenance and repair
things as they come IMO.
There are many contradictory opinions here regarding the timing chain
replacement issue. IMHO replacing components because they might fail at
some time in the future is a slippery slope as where do you stop? The
common rubber timing belts do require replacement but Saturn timing chains
are IMHO a component that should last the life of the engine and should give
warning of wear by becoming noisy before failure. IIRC, Most of the
failures reported seem to result from lack of proper lubrication leading to
failure of the chain tensioner or excessive chain wear rather than
catastrophic chain failure. Put me in the 'practice proper maintenance with
frequent oil changes group' and 'if it ain't broke don't fix it', but listen
for any increase in sound coming from the front of the engine that may be
due to wear of the chain or chain tensioner or of the coolant pump or
serpentine belt tensioner. Hold a piece of 3/4" hose to your ear to help
isolate the source of various noises. It takes a minute or so (and more in
winter) for full oil to reach the timing chain and I would suggest letting
the motor run to allow oil to reach timing chain and valve train before
driving. As machinery ages it requires longer for warm-up and to allow oil
to reach all the engine parts.
Almost any automobile will give lots of very cost effective service long
past 150,000 mi. PROVIDED that you DO NOT run them low on coolant or oil.
Most really expensive repairs are caused by lack of lubrication or coolant
or by abusive operation. Check your coolant and engine and transmission oil
regularly and keep them changed at proper intervals. Change the Dexron
transmission oil more frequently than mfg recommends, (IMHO use 50000 mi
change interval) Do NOT ride the clutch. Check the CV joint boots and
investigate any unusual oil or grease leaks, (when the leak stops it is
usually because it has run out of lubricant and is about to fail.
I would also change the brake fluid by complete bleeding if this has not
been done.
Check the serpentine belt and all coolant hoses frequently.
The biggest wild card and the most likely sudden large repair you may be
faced with is the clutch. How long this is likely to last is totally
dependant on usage and any previous replacement. If you did not buy this
car new you have no way of knowing how long the clutch will last and all you
can do now is to treat it gently by shifting smoothly and avoiding
downshifts
at high speed.
Just my .02 Good luck, YMMV