2.8 questions

[88Regal Limited]

Ok, a couple questions for y'all.

 

1) Where is the oil filter located on the 2.8?

2) what oil do you recommend for the 2.8?

3) Where is the oil drainplug at on the 2.8?

4) Why do I still have this POS 2.8 in here still? I need a 3.1....

 

Info and Pics appriciated!

[94CutlassSLCoupe]

1) right on the front of the lower portion of the block...you should be able to see it when you open the hood

2) Pennzoil 5w-30 / Purolator L24011

3) On the bottom of the rear side of the oil pan

4) My '88 Cutlass had a 2.8 that ran great with 200k...and its esentially just a smaller 3.1

[1990lumina]

1. don't know

2. 5W30 in winter or year round or 10W30 in summer only. Or of course that crazy synthtic stuff!!

3. don't know

4. Go further then the 3.1!!

 

I could scan the pages from the Haynes repair book, but only if no ne else posts!!

 

Wow, i'm not much help, free bump

 

Edit: Got beat to the posting..oh well

[88Regal Limited]

My '88 Cutlass had a 2.8 that ran great with 200k...and its esentially just a smaller 3.1

 

Thing runs fine, just only has 125hp in a 3300lb car. That's not going anywhere fast......

 

Have any pics of filter location?

 

What size is the oil filter nut?

[digitaloutsider]

15mm.. Why don't you people go out there and look and try yourself before you come here and post simple questions that have simple answers that you could have solved all by your lonesome? God. Maybe I'm just an asshole, but I HATE seeing obvious questions getting asked. (The goddamn oil cap SAYS right on it what viscosity of oil to use. Unless you're blind, the oil filter is the easiest thing in the world to see.. and the drain plug could have easily been found if you actually took the time out and looked.)

 

The oil filter question has been answered in previous threads on the subject. If I were a mod, this thread would be locked now.

[88Regal Limited]

lets see.... it's 9:53PM outside and 35*F. I dont want to freeze my ass od or go get the manual. (Wait, I don't have 1!) Maby I'm just stupid not to be lying on my stone driveway at 10PM in the freakin woods to check, waiting for the racoons/cats/bears to show up. :?

[MonteC]

castrol gtx. thats all i ever use. its an ash based oil.

 

unlike penzoil which is a parafin (wax type) based oil. ive taken apart engines that have used penzoil and other parafin based oils and they looked down right nasty.

 

ive personally taken my old v8 engine apart more than a few times, and its always been clean as a whistle.

 

personally ill never reccomend a parafin based oil.

 

oh and i always use an ac delco oil filter.

[digitaloutsider]

Okay sorry I was an ass before, but my entire day consisted of being asked obvious questions (by an underpaid wendy's manager). No hard feelings?

[88Regal Limited]

Okay sorry I was an ass before, but my entire day consisted of being asked obvious questions (by an underpaid wendy's manager). No hard feelings?

 

I know the feeling. No hard feelings.

 

Going to try to change the oil saturday, I'm expecting thick murkey black goo to come out.

[White93z34]

1) Where is the oil filter located on the 2.8?

center and front, can't miss it

 

2) what oil do you recommend for the 2.8?

5w30 castrol with a AC-Delco PF-52 oil filter.

 

3) Where is the oil drainplug at on the 2.8?

oil pan.... should be 15mm

 

4) Why do I still have this POS 2.8 in here still? I need a 3.1....

ya haven't blown it up yet, and you'll probably be waiting a good while before it does die.

[88Regal Limited]

ya haven't blown it up yet, and you'll probably be waiting a good while before it does die.

 

:verymad: :dammit: :cuss:

[5speedz34]

FWIW: 2.8's and 3.1's are exactly the same.

[GutlessSupreme]

besides the crank..

 

(and rods?)

[5speedz34]

I thought it was just a smaller stroke and bore, but everything else was the same.

[Prospeeder]

:withstupid:

[pitzel]

castrol gtx. thats all i ever use. its an ash based oil.

 

unlike penzoil which is a parafin (wax type) based oil. ive taken apart engines that have used penzoil and other parafin based oils and they looked down right nasty.

personally ill never reccomend a parafin based oil.

 

"parrafin" does *not* mean 'wax'. "parrafin" happens to be a type of molecule that provides superior oxidation resistance, ideally suited for use as a lubricating oil. Most if not all Castrol products are also based on paraffinic basestocks.

 

"Parrafin" wax is desirable from the point of view that it does not disintegrate fast, nor does it burn quickly, exactly the properties one desires in a motor oil. All motor oils on the market today undergo a dewaxing process.

 

"asphaltic" base oils are more prone to oxidation, and are thus less desirable for use as lubricating oils without elaborate treating.

 

Personally I run Mobil-1 and ExxonMobil XD-3 0W30 (a cheap 'fleet' version of Mobil-1 -- you have to buy it in bulk), both parafinnic synthetic oils, in mine and change oil every 25k miles which, IMHO, is pretty conservative.

 

For more reading about paraffinic molecules:

 

http://en.wikipedia.org/wiki/Isoparaffin

 

Synthetic oil is generally 1-n-decene, which is C10H20 arranged molecularly in a gazillion different ways. Extremely chemically and electrically stable.

[MonteC]

http://palimpsest.stanford.edu/don/dt/dt2482.html

 

paraffin ( paraffin wax )

A waxy crystalline substance that in the pure form is white, odorless and translucent and has the approximate chemical formula of C 20 H 42 (and above). It is obtained from petroleum by distillation and is then purified by sweating or solvent refining. Paraffin, which is not a true wax, consists mainly of a mixture of saturated straight-chain solid hydrocarbons. Its melting points range from 50 to 57° C. It is used in the manufacture of certain types of paper, in leather dressings, in marbling, in producing paraffin prints, etc.

 

http://tigger.uic.edu/~mansoori/Wax.and.Waxy.Crude_html

 

Paraffin / Wax

 

The wax present in petroleum crudes primarily consists of paraffin hydrocarbons (C18 - C36) known as paraffin wax and naphtenic hydrocarbons (C30 - C60). Hydrocarbon components of wax can exist in various states of matter (gas, liquid o r solid) depending on their temperature and pressure. When the wax freezes it forms crystals. the crystals formed of paraffin wax are known as macrocrystalline wax. Those formed from naphtenes are known as microcrystalline wax

 

Waxy Crude Oil

 

A Waxy crude usually consists of: i. A variety of light and intermediate hydrocarbons (paraffins, aromatics, naphtenic, etc.). ii. Wax as defined above. iii. A variety of other heavy organic (non-hydrocarbon) compounds, even though at very low conc entrations including resins, asphaltenes, diamondoids, mercaptdans, organo- metallics, etc. When the temperature of a waxy crude oil is lowered, first the heavier fractions of its wax content start to freeze out. For a waxy crude it is customary to measure its cloud point and pour point according to ASTM methods.

 

Pipeline Plugging due to Wax Deposition

 

A. A Clean Waxy Crude: A clean waxy crude is defined as a crude oil in which there exist only hydrocarbons and wax as its only heavy organic constituent. As the clean waxy crude flows through a cold pipe or conduit (with a wall tempera ture below the cloud point of the crude) crystals of wax may be formed on the wall. Wax crystals could then grow in size until the whole inner wall is covered with the possibility of encapsulating oil inside the wax layers. As the wax thickness increa ses, pressure drop across the pipe needs to be increased to maintain a constant flow rate. As a result, the power requirement for the crude transport will increase. The arterial blockage problems of clean waxy crude can be efficiently controlled by insu lation and heating of the pipe to a temperature above its cloud point.

 

Most of the existing wax deposition problems of the clean waxy crudes are due to the lack of proper insulation and heating systems. As a result application of chemical anti-foulants and frequent use of pigging operation have become necessary.

 

 

 

 

ok so its not a true wax... it still carries wax like charicteristics and is commonly refered to as a wax. what i put in bold is exatly what happens in you engine when too much paraffin is present, their example is just on a much bigger scale.

 

and your right paraffin is present in all oils but some oils such as castrol just use hyrocracking more effiecently, they have a better refining process.

 

In Hydrocracking, many of the paraffin and wax molecules are broken up into mineral oil molecules, which increases the performance of the base oil dramatically. Also, far more of the aromatics and sulpher and nitrogen compounds are removed from the oil.

[88Regal Limited]

What you guys said about the 3.1 and 2.8 being the same, it's not. The difference is basically 3 things.

 

1) the 3.1 is basically a stroked 2.8

2) The plentium is different

3) need to replace the wiring harness or it won't run right.

 

I did some digging for future referance.

[digitaloutsider]

WOW, WHAT EXTENSIVE LIST OF DIFFERENCES.

[MonteC]

What you guys said about the 3.1 and 2.8 being the same, it's not. The difference is basically 3 things.

 

1) the 3.1 is basically a stroked 2.8

2) The plentium is different

3) need to replace the wiring harness or it won't run right.

 

I did some digging for future referance.

 

so they have the same block? they can use the same accessories, same engine mounts, same transmission, and same exhaust?

 

except for the three things you listed, they sound pretty similar to me.

[5speedz34]

Exhaust is different.

[THe_DeTAiL3R]

Ok, a couple questions for y'all.

 

1) Where is the oil filter located on the 2.8?

2) what oil do you recommend for the 2.8?

3) Where is the oil drainplug at on the 2.8?

4) Why do I still have this POS 2.8 in here still? I need a 3.1....

 

Info and Pics appriciated!

 

1. Same place as on a 3.1, on the bottem

 

2. I used Castol GTX 10w30 in mine for a while, along with other brands... I don't think it really matters if you plan on changing it regularly. I beat the piss out of my 88' GP and it was still running strong at 280,000km.

 

3. already answered

 

4. 3.1s aren't anything special. Comparing them in the 1/4 mile for example, is like a half-3/4 second difference (if that). If you plan on upgrading go straight for a 3400 or larger

 

2.8s are DAMN reliable little engines, with less issues than 3100s and they sound damn cool too.

[buckethead]

yeah, man... no knocking the 2.8s here... oh and get a haynes manual dammit

[buckethead]

http://palimpsest.stanford.edu/don/dt/dt2482.html

 

paraffin ( paraffin wax )

A waxy crystalline substance that in the pure form is white, odorless and translucent and has the approximate chemical formula of C 20 H 42 (and above). It is obtained from petroleum by distillation and is then purified by sweating or solvent refining. Paraffin, which is not a true wax, consists mainly of a mixture of saturated straight-chain solid hydrocarbons. Its melting points range from 50 to 57° C. It is used in the manufacture of certain types of paper, in leather dressings, in marbling, in producing paraffin prints, etc.

 

http://tigger.uic.edu/~mansoori/Wax.and.Waxy.Crude_html

 

Paraffin / Wax

 

The wax present in petroleum crudes primarily consists of paraffin hydrocarbons (C18 - C36) known as paraffin wax and naphtenic hydrocarbons (C30 - C60). Hydrocarbon components of wax can exist in various states of matter (gas, liquid o r solid) depending on their temperature and pressure. When the wax freezes it forms crystals. the crystals formed of paraffin wax are known as macrocrystalline wax. Those formed from naphtenes are known as microcrystalline wax

 

Waxy Crude Oil

 

A Waxy crude usually consists of: i. A variety of light and intermediate hydrocarbons (paraffins, aromatics, naphtenic, etc.). ii. Wax as defined above. iii. A variety of other heavy organic (non-hydrocarbon) compounds, even though at very low conc entrations including resins, asphaltenes, diamondoids, mercaptdans, organo- metallics, etc. When the temperature of a waxy crude oil is lowered, first the heavier fractions of its wax content start to freeze out. For a waxy crude it is customary to measure its cloud point and pour point according to ASTM methods.

 

Pipeline Plugging due to Wax Deposition

 

A. A Clean Waxy Crude: A clean waxy crude is defined as a crude oil in which there exist only hydrocarbons and wax as its only heavy organic constituent. As the clean waxy crude flows through a cold pipe or conduit (with a wall tempera ture below the cloud point of the crude) crystals of wax may be formed on the wall. Wax crystals could then grow in size until the whole inner wall is covered with the possibility of encapsulating oil inside the wax layers. As the wax thickness increa ses, pressure drop across the pipe needs to be increased to maintain a constant flow rate. As a result, the power requirement for the crude transport will increase. The arterial blockage problems of clean waxy crude can be efficiently controlled by insu lation and heating of the pipe to a temperature above its cloud point.

 

Most of the existing wax deposition problems of the clean waxy crudes are due to the lack of proper insulation and heating systems. As a result application of chemical anti-foulants and frequent use of pigging operation have become necessary.

 

 

 

 

ok so its not a true wax... it still carries wax like charicteristics and is commonly refered to as a wax. what i put in bold is exatly what happens in you engine when too much paraffin is present, their example is just on a much bigger scale.

 

and your right paraffin is present in all oils but some oils such as castrol just use hyrocracking more effiecently, they have a better refining process.

 

In Hydrocracking, many of the paraffin and wax molecules are broken up into mineral oil molecules, which increases the performance of the base oil dramatically. Also, far more of the aromatics and sulpher and nitrogen compounds are removed from the oil.

 

 

That's referring to crude oil... as in the stuff getting pumped right from the ground and hasn't been processed yet. any parafin based motor oils have already been processed and aren't going to pose the kind of problem you are mentioning (unless you are buying rediculously cheap-ass shitty oil)

 

"Parrafin" wax is desirable from the point of view that it does not disintegrate fast, nor does it burn quickly, exactly the properties one desires in a motor oil. All motor oils on the market today undergo a dewaxing process.

 

Pitzel must have a doctorate in petrolium science or something. I wouldn't question him on his knowledge of the subject.

[MonteC]

ok ill let you guys think what you want. ive taken engines apart before, many, many times.