jnbthomas@gmail.com

I recently did an oil change on a '93 Buick Century. I used a 5W/ 30
oil. After I was finished putting the oil in, I read on the cap " use
10W/30". Is it a problem if I use a lighter weight? Thanks.

Earle Horton

You are supposed to read the cap before putting oil in, but I guess you
figured that out by now. 5W30 is not optimal, but it won't make your engine
seize after ten miles. If you change your oil every 2000 to 3000 miles, I
wouldn't worry about it. If you change it at a year or 7000 miles, then
consider putting 10W30 in it. What are we talking about here, ten dollars
worth of oil?

Your oil gauge or indicator light will tell you if the pressure in the oil
feed passages is too low, but that isn't your real worry. What you have to
worry about, is the instantaneous pressure at the crankshaft bearings. 5W30
is probably good enough, unless you plan on racing the vehicle.

There is no real answer to this question.

Earle

<jnbthomas@gmail.com> wrote in message
news:1124821444.077430.81840@f14g2000cwb.googlegro ups.com...
> I recently did an oil change on a '93 Buick Century. I used a 5W/ 30
> oil. After I was finished putting the oil in, I read on the cap " use
> 10W/30". Is it a problem if I use a lighter weight? Thanks.
>

Earle Horton

You are supposed to read the cap before putting oil in, but I guess you
figured that out by now. 5W30 is not optimal, but it won't make your engine
seize after ten miles. If you change your oil every 2000 to 3000 miles, I
wouldn't worry about it. If you change it at a year or 7000 miles, then
consider putting 10W30 in it. What are we talking about here, ten dollars
worth of oil?

Your oil gauge or indicator light will tell you if the pressure in the oil
feed passages is too low, but that isn't your real worry. What you have to
worry about, is the instantaneous pressure at the crankshaft bearings. 5W30
is probably good enough, unless you plan on racing the vehicle.

There is no real answer to this question.

Earle

<jnbthomas@gmail.com> wrote in message
news:1124821444.077430.81840@f14g2000cwb.googlegro ups.com...
> I recently did an oil change on a '93 Buick Century. I used a 5W/ 30
> oil. After I was finished putting the oil in, I read on the cap " use
> 10W/30". Is it a problem if I use a lighter weight? Thanks.
>

Earle Horton

You are supposed to read the cap before putting oil in, but I guess you
figured that out by now. 5W30 is not optimal, but it won't make your engine
seize after ten miles. If you change your oil every 2000 to 3000 miles, I
wouldn't worry about it. If you change it at a year or 7000 miles, then
consider putting 10W30 in it. What are we talking about here, ten dollars
worth of oil?

Your oil gauge or indicator light will tell you if the pressure in the oil
feed passages is too low, but that isn't your real worry. What you have to
worry about, is the instantaneous pressure at the crankshaft bearings. 5W30
is probably good enough, unless you plan on racing the vehicle.

There is no real answer to this question.

Earle

<jnbthomas@gmail.com> wrote in message
news:1124821444.077430.81840@f14g2000cwb.googlegro ups.com...
> I recently did an oil change on a '93 Buick Century. I used a 5W/ 30
> oil. After I was finished putting the oil in, I read on the cap " use
> 10W/30". Is it a problem if I use a lighter weight? Thanks.
>

Earle Horton

You are supposed to read the cap before putting oil in, but I guess you
figured that out by now. 5W30 is not optimal, but it won't make your engine
seize after ten miles. If you change your oil every 2000 to 3000 miles, I
wouldn't worry about it. If you change it at a year or 7000 miles, then
consider putting 10W30 in it. What are we talking about here, ten dollars
worth of oil?

Your oil gauge or indicator light will tell you if the pressure in the oil
feed passages is too low, but that isn't your real worry. What you have to
worry about, is the instantaneous pressure at the crankshaft bearings. 5W30
is probably good enough, unless you plan on racing the vehicle.

There is no real answer to this question.

Earle

<jnbthomas@gmail.com> wrote in message
news:1124821444.077430.81840@f14g2000cwb.googlegro ups.com...
> I recently did an oil change on a '93 Buick Century. I used a 5W/ 30
> oil. After I was finished putting the oil in, I read on the cap " use
> 10W/30". Is it a problem if I use a lighter weight? Thanks.
>

Bret Ludwig

Probably not, but if it's a 93 it probably has a lot of time (miles) on
it, so the clearances are even wider than when made. It's usually best
to put in heavier oils the older an engine gets.

Bret Ludwig

Probably not, but if it's a 93 it probably has a lot of time (miles) on
it, so the clearances are even wider than when made. It's usually best
to put in heavier oils the older an engine gets.

Bret Ludwig

Probably not, but if it's a 93 it probably has a lot of time (miles) on
it, so the clearances are even wider than when made. It's usually best
to put in heavier oils the older an engine gets.

Bret Ludwig

Probably not, but if it's a 93 it probably has a lot of time (miles) on
it, so the clearances are even wider than when made. It's usually best
to put in heavier oils the older an engine gets.

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

I think you are asking for it. Especially if it's still up around a
hundred degrees, and you use the air conditioning. Just, consider it an
flush, like they did in the old days. Like you may be hearing your main
bearings knock as they refill after it sitting, now
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

jnbthomas@gmail.com wrote:
>
> I recently did an oil change on a '93 Buick Century. I used a 5W/ 30
> oil. After I was finished putting the oil in, I read on the cap " use
> 10W/30". Is it a problem if I use a lighter weight? Thanks.