Good oil

Scrapla · 01-09-2003, 12:39 PM

My cars a 90gt with over 130k whats a good oil you all would recomend I just been using what the haynes manuel says so far but maybe you guys know something better, I live in south florida and dont have to worry about anything freezing.

01-09-2003, 01:49 PM

With that many miles on the motor I'd suggest Mobil-1 synthetic 20/50w oil. It's expensive compared to non-synthetic oils...but the benefits...especially on a tired motor...are worth it.

Dark_5.0 · 01-09-2003, 05:59 PM

I do not reccomend using synthetic on a high mileage engine.

A good 10-30 weight oil such as Castrol should do the job.

JMO,

01-09-2003, 06:30 PM

Quote:

Originally posted by Dark_5.0
I do not reccomend using synthetic on a high mileage engine.

How come? High mileage motors would benefit the most from synthetics.

Tony Frank · 01-09-2003, 06:46 PM

i personally dont use synthetics, but i know that castrol gtx is good quality oil.

Dark_5.0 · 01-09-2003, 07:47 PM

Quote:

Originally posted by Simi Stang
How come? High mileage motors would benefit the most from synthetics.

Synthetic oil cleans the hell out of the inside of engine which is great. But with an old high mileage engine the seals and gaskets are not what they used to be and the engine will leak oil if you use synthetic.

If you start out using synthetic when an engine is new then its ok to use it forever cause the engine is used to it.

But your not supposed to start using synthetic oil on a high mileage engine that is used to conventional oil.

Some people use synthetic oil on high mileage engines with no problems and some people develope oil leaks right away.

It all depends on the condition of your motor,

93calcobra · 01-09-2003, 11:24 PM

castrol

Storm911 · 01-09-2003, 11:34 PM

I personally use Mobil 10w-30 oil and a Fram filter. K-mart has it onsale for a dollar a quart every so often. A the dodge dealer we use bulk Shell oil.

PKRWUD · 01-10-2003, 08:28 AM

Quote:

Originally posted by Dark_5.0
Synthetic oil cleans the hell out of the inside of engine which is great. But with an old high mileage engine the seals and gaskets are not what they used to be and the engine will leak oil if you use synthetic.

If you start out using synthetic when an engine is new then its ok to use it forever cause the engine is used to it.

But your not supposed to start using synthetic oil on a high mileage engine that is used to conventional oil.

Some people use synthetic oil on high mileage engines with no problems and some people develope oil leaks right away.

It all depends on the condition of your motor,

This is absolutely correct. It is generally considered safe to switch if the engine has 60k miles or less. There are many people that have successfully switched at much higher mileage, but I won't ever recommend it.

I personally use Mobil 1 in my truck, and Red Line in the Sprint car.

PKRWUD · 01-10-2003, 08:32 AM

Quote:

Originally posted by Storm911
I personally use Mobil 10w-30 oil and a Fram filter. K-mart has it onsale for a dollar a quart every so often. A the dodge dealer we use bulk Shell oil.

Might want to rethink the filter. Fram is just about the crappiest filter made. I have taken them apart to verify this, and it is true. They use less filter media, and lower quality parts. WIX and Purolator are the best quality for the money, IMO.

Take care,
~Chris

lx5091 · 01-10-2003, 11:36 AM

I have successfully run 10w-30 and even 5w-30 in every car I've had regardless of the mileage. I theorize that Mobil 1 has the stuff to recondition old seals. Maybe I don't know what I'm talking about, but the motors always seems to run better, sound healthier and stay running well. It seems that every car I've had, I've sold or traded in with it running as well or better than when I got it! Mobil 1 is the only thing I use on every car and I only feed them Mobil regular gas and mid-grade every 4-5 fill-ups.

I don't have the money to do the research myself, but I'll settle for 5+ years of actual experience with Mobil 1 and 7+ years with Mobile gasoline in over 13 different cars.

PKRWUD · 01-10-2003, 12:33 PM

In short, what happens is the Mobil 1 cleans away deposits that have built up over the years, and creates clearance issues throughout the engine, including the seals. An engine that was well taken care of, and had it's oil regularly changed, is less likely to develop such deposits, and would handle the change to synthetic much better.

WADS56 · 01-10-2003, 12:56 PM

What PKRWUD says sounds good but i would like to see hard facts. Don't get me wrong PKRWUD knows allot more then me about this stuff, but I hear good points from both sides on this issue from reading about it on the internet.

I can say for a fact though that Castrol GTX, and Quakerstate sucks! I had the valvecovers off my old 83gt which I ran those two oils and there was allot of sludge (yes... every 3000 miles). I then switched to mobil 1 and after a few oil changes it was clean as a whistle. I had no leaks and it ran better also. The same goes for my 93lx to, I put in mobil 1 in it after 110,000 miles and no leaks plus a better running car.

Run what you want but it will last longer with mobil 1. Even if it does leak.

Wade

Dark_5.0 · 01-10-2003, 03:26 PM

Quote:

Originally posted by WADS56
What PKRWUD says sounds good but i would like to see hard facts. Don't get me wrong PKRWUD knows allot more then me about this stuff, but I hear good points from both sides on this issue from reading about it on the internet.

I can say for a fact though that Castrol GTX, and Quakerstate sucks! I had the valvecovers off my old 83gt which I ran those two oils and there was allot of sludge (yes... every 3000 miles). I then switched to mobil 1 and after a few oil changes it was clean as a whistle. I had no leaks and it ran better also. The same goes for my 93lx to, I put in mobil 1 in it after 110,000 miles and no leaks plus a better running car.

Run what you want but it will last longer with mobil 1. Even if it does leak.

Wade

It is a no brainer that mobil 1 synthetic is the best oil and will perform better than others. The only issue is possible oil leaks.

I think Castrol phuckin rocks. Personaly I use a castrol synthetic blend on my high mileage CRX, Mobil 1 5-20 weight synthetic in my cobra and stang.

JMO,

PKRWUD · 01-10-2003, 04:11 PM

Quote:

Originally posted by WADS56
What PKRWUD says sounds good but i would like to see hard facts. Don't get me wrong PKRWUD knows allot more then me about this stuff, but I hear good points from both sides on this issue from reading about it on the internet.

I can say for a fact though that Castrol GTX, and Quakerstate sucks! I had the valvecovers off my old 83gt which I ran those two oils and there was allot of sludge (yes... every 3000 miles). I then switched to mobil 1 and after a few oil changes it was clean as a whistle. I had no leaks and it ran better also. The same goes for my 93lx to, I put in mobil 1 in it after 110,000 miles and no leaks plus a better running car.

Run what you want but it will last longer with mobil 1. Even if it does leak.

Wade

Your own post kinda proves my point. Mobil 1 cleans out deposits. When the deposits are gone, you are left with empty space. In an engine, where there's empty space, there will eventually be oil.

I don't have and documented facts, just experience. I've seen engines w/ 50k miles start leaking with synthetic oil, and I've seen ones with 150k miles that didn't leak. The difference was in how often their oil was changed prior to switching to synthetic.

gtsr515 · 01-13-2003, 12:16 AM

I would go with 10-40 Valvoline Max Life...it is formulated for high mileage....they have a whole line of "high mileage" lubricants.

Stopped my 180,000 mile Lincoln's rear main leak by 50-60%

Jay

Deividas93GT · 01-13-2003, 09:33 AM

Whats the best oil filter then? WIX?

crazypete · 01-13-2003, 04:54 PM

Well, I think this has been beaten to death already, but here is my experience....

My 129K motor, when I use synthetic mobil 1 10w-30, burns off a quart every 300 miles (!!!! Yeah, that's what I said). When I use regular 10w-30 dino juice (castroL), I dont burn a darn thing. Yeah, the oil is black, but there's not much missing. Guess the previous owners did not change the oil often enough!

I love putting in additives, too, fluids containing teflon and other friction helpers. I put in a quart of "nu-power" and the oil pressure guage now rides in the high area instead of the middle and it seems that the car is easier to start and idles smoother.

88workcar · 01-14-2003, 07:08 AM

I use Kendall 20w50 and a motorcraft filter every 2000 miles. I love both. When I can not get the Kendall I use Valvoline Race 20w50. I have never owned a motor with less than 70,000 miles on it.

01-09-2003, 12:39 PM	#1
Scrapla Registered Member Join Date: Apr 2002 Location: Florida Posts: 532	Good oil My cars a 90gt with over 130k whats a good oil you all would recomend I just been using what the haynes manuel says so far but maybe you guys know something better, I live in south florida and dont have to worry about anything freezing. __________________ 90gt 347 and some bolt ons :-) RICE HATERS MEMBER #73

01-09-2003, 01:49 PM	#2
Simi Stang Guest Posts: n/a	synthetic oil With that many miles on the motor I'd suggest Mobil-1 synthetic 20/50w oil. It's expensive compared to non-synthetic oils...but the benefits...especially on a tired motor...are worth it.

01-09-2003, 05:59 PM	#3
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	I do not reccomend using synthetic on a high mileage engine. A good 10-30 weight oil such as Castrol should do the job. JMO, __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

01-09-2003, 06:46 PM	#5
Tony Frank Registered Member Join Date: Feb 2001 Location: Brooklyn originally, but Grand Rapids now Posts: 309	i personally dont use synthetics, but i know that castrol gtx is good quality oil. __________________ Grand Valley State University Senior Accounting and Finance Major 1985 Mustang GT 19,000 ORIGINAL miles, E-303 cam, edelbrock performer RPM intake, holley 600 cfm carb, MAC headers, windage tray, 8.8 rear end with 4.10 gears, 4"cowl hood, 5lug conversion, 04 Mach1 wheels. http://www.mustangworks.com/cgi-bin/moi-display.cgi?1501

01-09-2003, 11:24 PM	#7
93calcobra Registered Member Join Date: Oct 2002 Location: sacramento california Posts: 97	castrol __________________ 1993 red cobra 1999 ford lightning 1999 bmw 3m 2003 lincoln ls

01-09-2003, 11:34 PM	#8
Storm911 Registered Member Join Date: Sep 2002 Posts: 9	I personally use Mobil 10w-30 oil and a Fram filter. K-mart has it onsale for a dollar a quart every so often. A the dodge dealer we use bulk Shell oil. __________________ 1996 Ford Contour LX Fully Loaded 2.5 V6 1986 Ford Mustang GT 5.0L Primer Gray

01-10-2003, 11:36 AM	#11
lx5091 Registered Member Join Date: Nov 2001 Location: Fall River, MA Posts: 467	I have successfully run 10w-30 and even 5w-30 in every car I've had regardless of the mileage. I theorize that Mobil 1 has the stuff to recondition old seals. Maybe I don't know what I'm talking about, but the motors always seems to run better, sound healthier and stay running well. It seems that every car I've had, I've sold or traded in with it running as well or better than when I got it! Mobil 1 is the only thing I use on every car and I only feed them Mobil regular gas and mid-grade every 4-5 fill-ups. I don't have the money to do the research myself, but I'll settle for 5+ years of actual experience with Mobil 1 and 7+ years with Mobile gasoline in over 13 different cars. __________________ '02 Explorer XLT 4.0L --Nice Vehicle '97 Saturn SL1--Soon to be ditched for a Ford!

01-10-2003, 12:33 PM	#12
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	In short, what happens is the Mobil 1 cleans away deposits that have built up over the years, and creates clearance issues throughout the engine, including the seals. An engine that was well taken care of, and had it's oil regularly changed, is less likely to develop such deposits, and would handle the change to synthetic much better. __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

01-10-2003, 12:56 PM	#13
WADS56 gear banger Join Date: Aug 2000 Location: CHICAGO Posts: 1,144	What PKRWUD says sounds good but i would like to see hard facts. Don't get me wrong PKRWUD knows allot more then me about this stuff, but I hear good points from both sides on this issue from reading about it on the internet. I can say for a fact though that Castrol GTX, and Quakerstate sucks! I had the valvecovers off my old 83gt which I ran those two oils and there was allot of sludge (yes... every 3000 miles). I then switched to mobil 1 and after a few oil changes it was clean as a whistle. I had no leaks and it ran better also. The same goes for my 93lx to, I put in mobil 1 in it after 110,000 miles and no leaks plus a better running car. Run what you want but it will last longer with mobil 1. Even if it does leak. Wade __________________ 79 Hatch: NA 347, Stage 2 Canfield Heads, Victor JR. Intake, Blueprinted Holley 750 HP, Solid Roller Cam, Shooting for 10's on motor 93 LX: Tremec, dual friction clutch, fms flywheel, Hedman shorties, O/R H-pipe Ricer hater's club member #49

01-13-2003, 12:16 AM	#16
gtsr515 Registered Member Join Date: Nov 2001 Location: Sunny, Hot, Sebring, Florida Posts: 725	Oil I would go with 10-40 Valvoline Max Life...it is formulated for high mileage....they have a whole line of "high mileage" lubricants. Stopped my 180,000 mile Lincoln's rear main leak by 50-60% Jay __________________ Remember...2nd place is 1st place for losers!

01-13-2003, 09:33 AM	#17
Deividas93GT Registered Member Join Date: Nov 2002 Location: Dearborn Hts, MI Posts: 13	Whats the best oil filter then? WIX? __________________ 93 GT, 5 speed....Full Exhaust, 373's, Nitto DR's....1.92/13.90/97(26x10.5 ET Streets)

01-13-2003, 04:54 PM	#18
crazypete Registered Member Join Date: Sep 2002 Location: Boston Posts: 592	Well, I think this has been beaten to death already, but here is my experience.... My 129K motor, when I use synthetic mobil 1 10w-30, burns off a quart every 300 miles (!!!! Yeah, that's what I said). When I use regular 10w-30 dino juice (castroL), I dont burn a darn thing. Yeah, the oil is black, but there's not much missing. Guess the previous owners did not change the oil often enough! I love putting in additives, too, fluids containing teflon and other friction helpers. I put in a quart of "nu-power" and the oil pressure guage now rides in the high area instead of the middle and it seems that the car is easier to start and idles smoother. __________________ 91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior

01-14-2003, 07:08 AM	#19
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	I use Kendall 20w50 and a motorcraft filter every 2000 miles. I love both. When I can not get the Kendall I use Valvoline Race 20w50. I have never owned a motor with less than 70,000 miles on it. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

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