Should you use synthetic oil on a high mileage motor? - Ford Mustang Forum
 
LinkBack Thread Tools
post #1 of 6 (permalink) Old 07-18-2004 Thread Starter
Rookie
 
Warloc's Avatar
 
Joined: Apr 2004
Location: Bartlett
Posts: 26
 
Should you use synthetic oil on a high mileage motor?

Just got back into building up cars...My latest project has 137k on it and still pulls strong with good oil pressure and no smokeing. I was thinking of running synthetic oil to help it out. Is this ok to do with a high mileage engine or should I just stick to a good milti-weight oil? Would a 20w-50 work better or a 10w-30? Any insight would help since I want to prolong going into the block for about a year if possible.
Warloc is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 07-18-2004
Top Dog
5.0L Member
 
GhostDog 5.0's Avatar
 
Joined: Aug 2002
Location: Edinburg
Posts: 4,837
 
Send a message via AIM to GhostDog 5.0 Send a message via Yahoo to GhostDog 5.0
I would use 10w30 full synthetic if you really want to help it out and have the money to spend on it. This will really baby it but you could get away with regular oil and maybe change the oil at 2,000 miles.

89 GT Hatch: Custom M90 Supercharged w/ Ported Trickflow Trackheat Heads, Stage 1 cam, Streetheat lower / Sheet metal upper, Tweecer RT & PLX Wideband, 75mm TB, 1.6 Roller rockers, 3.73s, MSD 6a, Canton 7qt Pan+ Windage tray, 36LB Injectors, 200 amp Alternator, 75mm Pro-Mas MAF, 190lph fuel pump,Spec Stage 1 Clutch,SouthSide LCA's, Pro 5.0 Shifter, Steeda CC Plates / Springs, FMS Aluminum Driveshaft, New T5 w/ 2.95 first gear, Underdrive pullies, Zirgo 3300Cfm Elec. Fan, AFCO alum. radiator
GhostDog 5.0 is offline  
post #3 of 6 (permalink) Old 07-18-2004
Made Member
 
somersdp's Avatar
 
Joined: Nov 2003
Location: West Palm Beach
Posts: 327
 
I would run 20w50 if your car has 120k or more on it. Only if you are in an area where the temperature stays above freezing. Synthetics will show all the leaks your motor is about to get, rear main, valve covers, oil pan, etc... Just my opinion

Cooking Rice: Measure out 300+hp, add 1 tbsp. blue oval, and 15" of MT's. Line up to rice and rapidly start smoking! Cook for 1320ft or until thoroughly done.
somersdp is offline  
post #4 of 6 (permalink) Old 07-18-2004
Apprentice
 
macx's Avatar
 
Joined: Oct 2002
Location: Gordonville
Posts: 103
 
218k & Going Strong on Mobil 1

Hi

I bought an 89 Lincoln Mark VII LSC with 5.0 HO in the
mid 90's - it had 105k on it then and had not been babied.

I switched to Mobil 1 a few months later after reading
about it.

I now have 218k on the car and it's still running good -
uses normally not over 1/2 quart to 2500 mi oil change.
Have a little seepage at the front seal and valve covers,
but nothing unusual.

I've driven it fairly hard with lots of long 80+mph trips,
mixed with fairly cold weather 20 mile trips and 90 deg
plus summer driving with no problems.

I use 10W30 and do not have any oil pressure problems.
With the overdrive trans in cars now you don't run as
many rpms per mile so they don't wear as fast as they
used to, plus engines are built better and with better
quality parts, so wear is not as great at 100k as it was
not too many years ago. Besides, you're wasting
several horsepower and a little gas mileage pumping
heavier weight oil and it's harder on the distributor
gear and cam gear.
macx is offline  
post #5 of 6 (permalink) Old 07-19-2004
Made Member
5.0L Member
 
Mack Daddy's Avatar
 
Joined: Apr 2002
Location: Springfield
Posts: 1,159
 
Send a message via AIM to Mack Daddy Send a message via Yahoo to Mack Daddy
I use Mobil 1 10w - 30 Full Synthetic

1995 5.8 GT Coupe / White / Tan Leather

All the normal goodies including a built C4, Kennebell Blowzilla @ 12lbs.

She spins!

11.7 @ 116mph
Mack Daddy is offline  
post #6 of 6 (permalink) Old 07-19-2004
Apprentice
5.0L Member
 
Thunder122's Avatar
 
Joined: Jan 2004
Posts: 193
 
Send a message via Yahoo to Thunder122
my car has 155k on it and im using full synthetic on it 10w 30 seems to be doing fine

87 mustang gt 5.0 5 speed,Flowmaster,Bored .30 over ,BBK Shorty Headers,Steeda short thow,New engine fully rebuild pure carb..
Thunder122 is offline  
Sponsored Links
Advertisement
 
Closed Thread

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a VALID email address for yourself, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:
OR

Log-in









Random Question

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183