how many quartz of oil

[wantan17]

lastt time i changed my oil i over filled , i just want to get right on the dime , already checked faqs, ps--this is a 89

[91BLOWNSC]

Its 5. Then check it to make sure its ok. Thats what the dipsticks for.

[Deep6]

You should fill it up with 5 quartz of oilz. I remember that over filling a crankcaze with more than 5 quartz of oilz, will throw the Rodz right through the oilz pan.

And don't try to underfill the crankcaze either because then when you are racing all of the oilz will zlap up zide the oilz pan and not get to your oilz pump. Then there will be cataztrophic failure in the engine, your Rodz will zeize up and your crankzhaft will be all zcored up too.

So, use 5 quartz of Mobil 1 5w-30 each and everytime you change your oilz. Alzo uze a high quality oilz filter like the mobil 1 oilz filter or a purolater pure one filter. All other filterz aren't quite az good. It'z the only way to make MaD hOrSePoWaZ yo.

[Pablo94SC]

I disagree. First, how many miles are on the car? If you're over 75k miles and have a decent amount of mods use 10w30 in the winter and 15w40 in the summer. Use 20w50 for highly modded motors and extreme heat climates (like southern Texas summers). That's from the Dr. Fred SC medical guide.

If you don't currently use synthetics and again are above 75k, stay with whatever type (not brand) of oil you have been using (syn-blend or straight oil). If you suddenly go to full synthetic, you run the risk of cleaning out the deposits that are actually keeping things sealed, like the head gaskets. That's how well full synthetic flows and keeps engine parts clean. Too bad it can cause all that in an older engine. :(

Finally, I've never used much more than 4.5 quarts of oil and my dipstick always reads just at the full line. When I tried 5 quarts once, it actually read above the full line. So I drained it, called it a learning experience, and went about my biddness. :) The lesson, stop and wait a few minutes after adding 4.5 quarts. Then slowly add till the disptick reads full.

Paul

[kevenj90sc]

my 90 sc takes 5 with filter , and the dipstick reads right on full.....i use 10w30 valvoline, but i'm in the northwest, does not get hot here for long periods of time, and in the winter the car is stored. As far as filters go, the only filter to use is WIX or NAPA or CARQUEST (they are all Wix in reality).....cut a new one open and then get a new fram and a purolator or any other brand you want and cut them open too and you'll see for yourself......

[Pablo94SC]

I read that oil filter site and it seemed to me that the Purolator (ie Motorcraft) filter was the best bang for the buck. Maybe something new developed? Later.

Paul

[Phil Kuhn]

Pablo,
Amsoil, Mobil 1, Hastings, Wix, Purolator, and Motorcraft are all VERY good oil filters.

[Deep6]

When I uzed 10W-30 in BELOW freezing tempz (below 32F) the lifterz would tap in the morning. Zwitching to 5w-30 for below freezing tempz is what the ownerz manual recommendz.
No more lifter noize.

It alzo zhowz that 5w-30 oilz is good to 100degreez F. Zince it rarely getz above 100degreez F here in Upper NY, I run 5w-30 year round. I have been running Mobil 1 since 27,000milez when I got this car. I have around 70,000milez now and I continue to use mobil 1.

10W-30 would be better to uze at temperaturez exceeding 100degreez F. But NOT below 32degreez F.

Alzo the ownerz manual zpecifiez 5 quartz of oil and that on the 3.8L engine, the oilz line WILL read higher than the "FULL" mark on the dipztick.

What I love is when wal-mart haz the 5 quart container of mobil 1 on zale for something like $18 buckz vz. the $4.24 I pay for each individual quart. Unfourtunatly the timez when they do have the mobil 1 for zale in the 5 quart container it iz alwayz 10W-30 and the middle of december! :)

[Pablo94SC]

Not busting your chops, but high mileage motors have increased wear in key areas and the thicker oil helps keep things protected. Plus, do to the high heat our engines produce, the thicker oil helps keep parts cool. Maybe it's not beneficial for you.

But what the manufacturer says isn't always the best thing. Gotta remember, they make money off of selling parts and new cars, not keeping your car running forever. ;)

Paul

[David Neibert]

Mine takes 5-1/2 quarts to show full on the dipstick. Like Paul said using a thicker oil to protect the rod bearings is good insurance on an older or highly modded SC engine.

I'm using Valvoline 20W-50W now that the weather is starting to warm up.

David

[Phil Kuhn]

I saw Castrol Syntec 5W-50 at Wal-Mart the other day.

That ought to cover me.

[Jimmy 2Coupes]

Five quarts with oil filter change. Mobil One fully synthetic 5w-30 winter, 10w-30 summer.


http://sc.communities.msn.com/tn/33/90/ThunderbirdRow/2/2a.jpg

[OneSweet89SC]

for a car that burns about 1/2 to 3/4 of a quart between changes, what would be better, to go thicker or thinner? i currently have 65k miles and use mobil 1 5w-30. thanks.

Rich

http://members.tccoa.com/onesweet89sc/Sig.jpg

[Pablo94SC]

Thicker. Burning oil is usually because it's thinning out too much due to heat. You may also want to consider changing your coolant, adding some water wetter, a lower t-stat, and making a fan switch. Only other thing I can think of is you have worn rings and seals and loosing oil that way. Let's hope not for your sake!

Paul