Oil Change? What grade should I use?
Oil Change? What grade should I use?
12-06-2002, 02:49 PM
#2
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The current Porsche recommendation (June 2001) on oils for use in all 4,6, and 8 cylinder Porsche engines since 1973 is:
Castrol/Syntec......................... 5W-50
Mobil 1.................................. 0W-40, 5W-40
Sun Oil/Sunoco Synturo Gold............ 5W-40
Texaco/Havoline Formula 3 Synthetic.... 5W-40
Valvoline/High Performance Synthetic... 5W-30
Viscosities recommended for the Turbo are 0W-40, 5W-40 and 5W-50. The nW-30 weight oils are approved to 85 degrees F. Greater than 85 degrees F should use nW-40 and above. Alan Caldwell (PCA Technical expert on 1989 and earlier 911's) has noted that conversion to synthetics in 1978 and later engines should not cause any undo problems.
The current Porsche recommendation (June 2001) on oils for use in all 4,6, and 8 cylinder Porsche engines since 1973 is:
Castrol/Syntec......................... 5W-50
Mobil 1.................................. 0W-40, 5W-40
Sun Oil/Sunoco Synturo Gold............ 5W-40
Texaco/Havoline Formula 3 Synthetic.... 5W-40
Valvoline/High Performance Synthetic... 5W-30
Viscosities recommended for the Turbo are 0W-40, 5W-40 and 5W-50. The nW-30 weight oils are approved to 85 degrees F. Greater than 85 degrees F should use nW-40 and above. Alan Caldwell (PCA Technical expert on 1989 and earlier 911's) has noted that conversion to synthetics in 1978 and later engines should not cause any undo problems.
12-06-2002, 08:45 PM
#3
ddd:
If you do not want to use synthetics, you can use 20W 50 conventional oil. A lighter weight can be used if you are driving in a colder winter climate.
Brand choice is up to you. Any name brand oil will be fine if you change at regular intervals.
Hope this helps,
Jay
<a href="http://www.jays911.com" target="_blank">90 964</a>
If you do not want to use synthetics, you can use 20W 50 conventional oil. A lighter weight can be used if you are driving in a colder winter climate.
Brand choice is up to you. Any name brand oil will be fine if you change at regular intervals.
Hope this helps,
Jay
<a href="http://www.jays911.com" target="_blank">90 964</a>
12-07-2002, 10:46 AM
#5
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Thanks for the info guys. I live in GA where winters really aren't too bad.
Of course like most of us I baby my 911SC. I only put about 1k a year on her but still change the oil at least twice a year.
I just want to put the right oil in considering she sits a lot and is getting up in the ages. When I do drive her I drive her like a Porsche should be driven!
Of course like most of us I baby my 911SC. I only put about 1k a year on her but still change the oil at least twice a year.
I just want to put the right oil in considering she sits a lot and is getting up in the ages. When I do drive her I drive her like a Porsche should be driven!
12-07-2002, 10:51 AM
#6
Lark:
I have the same situation as you. 1000-2000 miles per year and the car sits a lot. I also change oil twice a year anyway. In your warm climate and low useage of the car, I would definitely run 20W 50 conventional in your favorite brand.
Jay
I have the same situation as you. 1000-2000 miles per year and the car sits a lot. I also change oil twice a year anyway. In your warm climate and low useage of the car, I would definitely run 20W 50 conventional in your favorite brand.
Jay
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12-08-2002, 12:15 PM
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ddd, i live in atl also and have been using castrol 20w50. w/ 89k on the clock, i decided to not use synthetics but change dino every 2-3k.
charles
88 cab <img src="graemlins/drink.gif" border="0" alt="[cherrsagai]" />
charles
88 cab <img src="graemlins/drink.gif" border="0" alt="[cherrsagai]" />
12-08-2002, 12:30 PM
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Thanks.
I went with 20W-50 racing formula. She took all of 11.5 quarts! I thought I was going to have to go buy another case of oil. <img src="graemlins/drink.gif" border="0" alt="[cherrsagai]" />
I went with 20W-50 racing formula. She took all of 11.5 quarts! I thought I was going to have to go buy another case of oil. <img src="graemlins/drink.gif" border="0" alt="[cherrsagai]" />
12-08-2002, 01:50 PM
#10
Whoa!
Be careful when you refill your oil! Remember that the oil will expand when hot. If you topped off the dipstick when you're refilling before the engine warms up you'll have a huge mess on your hands! It's best to leave it a quart or so low all the time.
Typically, add ONE quart only when you hit the lower mark on the stick. No sooner than that or later. Fully warmed up, and the car idling on level ground.
Be careful when you refill your oil! Remember that the oil will expand when hot. If you topped off the dipstick when you're refilling before the engine warms up you'll have a huge mess on your hands! It's best to leave it a quart or so low all the time.
Typically, add ONE quart only when you hit the lower mark on the stick. No sooner than that or later. Fully warmed up, and the car idling on level ground.
12-09-2002, 07:49 AM
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Again, thanks for the pointers. Luckly my boss, who has a beautiful 73' 911T, came over and showed me exactly what you described, in terms of the process.
My car still took all of 11.5 quarts of oil.
Here's the process we took: Added 8 qts, then warmed the enging for about 30 sec.'s to 1 minute, idle only. Added two more qrts. then ran engine for 5 minutes, got engine tempt between 180-200. Then carefully added one more qrt. to where the dip stick showed at min. mark. At that point we took her for a spin and just added enough to make our mark sit between min and max, this is with the engine at regular driving temp.
What do you think? <img src="graemlins/yltype.gif" border="0" alt="[typing]" />
My car still took all of 11.5 quarts of oil.
Here's the process we took: Added 8 qts, then warmed the enging for about 30 sec.'s to 1 minute, idle only. Added two more qrts. then ran engine for 5 minutes, got engine tempt between 180-200. Then carefully added one more qrt. to where the dip stick showed at min. mark. At that point we took her for a spin and just added enough to make our mark sit between min and max, this is with the engine at regular driving temp.
What do you think? <img src="graemlins/yltype.gif" border="0" alt="[typing]" />
12-09-2002, 07:32 PM
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Sorry to hear that...how cold is it? It only got to 53 degrees on Sat. here. In the shade it felt like 10, but I like cold weather as much as warm.
After a little spin around the neighborhood we were easily able to hit 180 degree engine temps.
I guess that's why you folks drink all that coffee. <img src="graemlins/crying.gif" border="0" alt="[crying]" />
After a little spin around the neighborhood we were easily able to hit 180 degree engine temps.
I guess that's why you folks drink all that coffee. <img src="graemlins/crying.gif" border="0" alt="[crying]" />