Changing oil in a car that's been sitting

105

Asked by Mar 18, 2015 at 03:20 PM about the 1984 Pontiac Fiero Base

Question type: Maintenance & Repair

My 84 pontiac fiero has been sitting for 10
years and I need to change the oil. Is it okay
to change the oil normally or since it's been
sitting, should there be a special fluid
added or should I run it before changing the
oil, what's the best way to do this that's
good for my engine?

10 Answers

DO NOT RUN it before changing oil...(no additives needed) I doubt there is any gas in it after 10 years, no way. But take out spark plugs, squirt a SMALL amount of oil in combustion chamber, put gas in, fuel filter!! new battery and maybe just maybe it will start. Do NOT drive it on the tires it has, they are dangerous. Then if it's worth it put new belts and hoses all around. There is probably water in the tank, drain that out first

3 of 3 people found this helpful.
105

It's been in a heated clean garage for all 10 years, so the tires and belts and hoses are fine and I have started it and ran it for 10- 15 seconds to know that it does and it fired up. I was just curious about the oil...

2 of 2 people found this helpful.
246,205

Do what ford nut suggested and just drain and add new oil. The tires should be replaced, it is recommended that you shouldn't run tires 6 years after the manufacturing date. They are probably flat spotted due to sitting so long as well.

1 of 1 people found this helpful.
7,395

any aged rubber parts must be changed after 6 years incase of deteriation. oil must be changed to get all rust out and new additive in oil in to keep the engine from excessive wear.

2 of 2 people found this helpful.
625

These guys are telling you the truth. Also, do not trust the brakes. Make sure to change the brake fluid, wheel cylinders, brake calipers, and I would take a real close look at the rubber brake lines. Of course, the engine coolant is shot as well, so I would change that as well as the thermostat.

1 of 1 people found this helpful.
625

You might also consider removing the fuel tank and cleaning it out. If you don't you may end up replacing a lot of fuel filters, if the injectors do not clog up first. Good luck.

1 of 1 people found this helpful.

Good info Astre. And Jason. And Tom. Yep, any rubber, including seals that have dried up. 10 years is a long time, and t-samuel, we are thinking about your safety just as much or more than the car running. And all of us forgot to say oil filter!

Best Answer
105

Thanks guys!

70

these guys have you in the right direction I think.. I would just suggest changing with diesel engine oil of same weight to run for a couple of hundred miles and then change again with the normal gas engine oil. The reason is that the diesel oil has a lot more detergent in it and will clean out any rust or water or spider bodies (LOL) that might be floating around the engine tubes. The detergent will clean out the journals and fix you up. Also be sure to change the oil filters both times as after the diesel old has finished up cleaning out the garbage, it will be nicely deposited in the oil filter there for you to file away in the round can. change your radiator fluid too or you might see a busted water pump at an inoportune time.. Just sayin'... Good luck and it sounds like you are on your way!

I have had mine sitting for almost 15 years now n started it up other day for first time, gas in it also that old & started on 2nd time. I plan doing full service on it & get back on road. :)

Your Answer

Add photo

Related Questions

  • Changing oil in a car that's been sitting 10 answers

    My 84 pontiac fiero has been sitting for 10 years and I need to change the oil. Is it okay to change the oil normally or since it's been sitting, should there be a special fluid added or should I ...

    1984 Pontiac Fiero Base

    -

    Maintenance & Repair

  • my 1986 Fiero has been sitting for 10 years and I am trying to get it started. 4 answers

    my 1986 Fiero has been sitting for 10 years and I am trying to get it started. It turns over, but just doesn't want to start. I am not much of a mechanic, so how do I determine where the fuel injector...

    1986 Pontiac Fiero GT

    -

    Maintenance & Repair

  • Will a 1987 Engine fit in a 1988? 8 answers

    A head gasket blew in my 1988 Pontiac Fiero GT and the mechanic says that I need a new engine. I found a complete 87 Fiero Motor V6 on Craig's List. Can I put the 1987 in my 1988 Fiero GT. Asking pr...

    1988 Pontiac Fiero GT

    -

    Maintenance & Repair

  • Temp / Oil Pressure gages 1 answer

    car had been in storage approx. 6 mths. After charging / reinstalling battery both the temp & oil pressure gages are pinned. HELP- thanks

    1986 Pontiac Fiero GT

    -

    Maintenance & Repair

  • idle rough and cuts off after running car for a extended period of time 1 answer

    V6 engine, Car runs great but after running car for a period of time, when stopping it starts to idle rough and cuts off, starts right back up with no problem, sometimes when put back in gear cuts bac...

    1988 Pontiac Fiero Formula

    -

    Maintenance & Repair

Fiero

Looking for a Used Fiero in your area?

CarGurus has 69 nationwide Fiero listings and the tools to find you a great deal.

ZIP:

Search Pontiac Fiero Questions

Pontiac Fiero Experts

#1 Andrew Welsh
Andrew Welsh
Reputation 230
#2 THORNY68
THORNY68
Reputation 220
#2 Steve Neyens
Steve Neyens
Reputation 220
View All

Related Models For Sale

Used Pontiac Firebird
14 Great Deals out of 763 listings starting at $3,490
Used Ford Mustang
717 Great Deals out of 44,996 listings starting at $1,500
Used Chevrolet Corvette
207 Great Deals out of 22,044 listings starting at $2,500
Used Chevrolet Camaro
348 Great Deals out of 31,370 listings starting at $2,500
Used Toyota MR2
16 listings
Used BMW 3 Series
1,016 Great Deals out of 31,286 listings starting at $975
Used Nissan 300ZX
131 listings starting at $3,995
Used Dodge Challenger
254 Great Deals out of 22,615 listings starting at $7,500
Used Pontiac Grand Prix
27 Great Deals out of 2,823 listings starting at $1,991
Used Porsche 911
104 Great Deals out of 4,438 listings starting at $12,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.