1968 327/300 oil filter
09-23-2015, 07:48 PM
#1
Team Owner
Thread Starter
1968 327/300 oil filter
Just did the first oil change on my '68 327/300. I bought the filter that was listed for the year and engine which was the TG30 Fram filter (or PH30).
The filter that was on the car was AC Delco PF35 which was a lot deeper than the TG30. I filled 5 qt of oil into the car and it appears that the oil is now 1/2 quart too high.. I guess that the original oil filter on the 68 Vettes must've been a full quart filter. It appears that the TG30 only holds 1/2 quart. Did I get the right filter and should I drain 1/2 quart of oil?
The filter that was on the car was AC Delco PF35 which was a lot deeper than the TG30. I filled 5 qt of oil into the car and it appears that the oil is now 1/2 quart too high.. I guess that the original oil filter on the 68 Vettes must've been a full quart filter. It appears that the TG30 only holds 1/2 quart. Did I get the right filter and should I drain 1/2 quart of oil?
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CB-24 (03-05-2020)
09-23-2015, 07:55 PM
#2
Just did the first oil change on my '68 327/300. I bought the filter that was listed for the year and engine which was the TG30 Fram filter (or PH30).
The filter that was on the car was AC Delco PF35 which was a lot deeper than the TG30. I filled 5 qt of oil into the car and it appears that the oil is now 1/2 quart too high.. I guess that the original oil filter on the 68 Vettes must've been a full quart filter. It appears that the TG30 only holds 1/2 quart. Did I get the right filter and should I drain 1/2 quart of oil?
The filter that was on the car was AC Delco PF35 which was a lot deeper than the TG30. I filled 5 qt of oil into the car and it appears that the oil is now 1/2 quart too high.. I guess that the original oil filter on the 68 Vettes must've been a full quart filter. It appears that the TG30 only holds 1/2 quart. Did I get the right filter and should I drain 1/2 quart of oil?
If you want, they do make a tall "2 quart Chevy" that will fit, hold more oil, and still have plenty of ground clearance.
09-23-2015, 08:05 PM
#3
Team Owner
Thread Starter
I would not sweat 1/2 quart. However, please do not use a Fram POS again. Of all the oil filters tested over and over again by shops, Fram was the worst. Wix and NAPA Gold were best, Delco is still pretty good. Others will chime in here as well.
If you want, they do make a tall "2 quart Chevy" that will fit, hold more oil, and still have plenty of ground clearance.
If you want, they do make a tall "2 quart Chevy" that will fit, hold more oil, and still have plenty of ground clearance.
09-23-2015, 08:34 PM
#4
The TG30 was the best filter I could find at Walmart... I could have gotten the even cheaper Purolator... who has the WIX filters? Never saw them at Advance Auto Parts or Walmart..I prefer to drain the 1/2 quart...BTW, used Pennzoil 10W40 oil. I would have preferd straight 40 or 30 but Walmart only had 10W30 or 10W40..
09-23-2015, 08:43 PM
#5
Team Owner
Thread Starter
09-23-2015, 09:58 PM
#7
Team Owner
Thread Starter
09-24-2015, 09:02 AM
#9
Team Owner
The TG30 was the best filter I could find at Walmart... I could have gotten the even cheaper Purolator... who has the WIX filters? Never saw them at Advance Auto Parts or Walmart..I prefer to drain the 1/2 quart...BTW, used Pennzoil 10W40 oil. I would have preferd straight 40 or 30 but Walmart only had 10W30 or 10W40..
09-25-2015, 07:27 AM
#11
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St. Jude Donor '11-'24
Not to worry
I wouldn't worry about 1/2 quart extra. Some people run a little extra oil in the crankcase when road racing.
I like the WIX filters also.
Bob K.
I like the WIX filters also.
Bob K.
09-25-2015, 10:02 AM
#12
Le Mans Master
Do a search for engine oil. You'll find many of threads with many opinions on the subject.
The short of it is that you want an oil with at least 1000 PPM of zinc for a flat tappet engine. I wold recommend Mobil One 0W-40 full synthetic.
10W40 is a plant based oil. It contains lots of polymers to make it act like 40W when hot and 10W when cold. These polymers shear out of their weight specs rather quickly. So after a while what you got is straight 10W oil. Conventional oil flows much worse at cold start than synthetic oil.
Synthetic provides better flow at cold start where 80% of engine wear occurs. It is also a 40W base that has additives to make it act like 0W when cold. So at 2000, 3000 etc. miles you still have a good base oil doing it's job.
All the Napa filters are made by Wix. Good filters. The Fram extra guard, extreme guard etc. are finer and finer filtering media. This is good as long as there is no bypassing of the filter.
Problem is, is that there is bypassing of the filter. More so when you restrict the flow even more with a finer filter media. So you are not filtering your oil when the filter is being bypassed, such as at cold start and high RPMs.
When that bypass starts is dependent of the restriction to flow through the filter and the differential pressure across the filter.
Finer media = more restriction to flow = earlier bypassing of the filter.
Use good oil and good filters and you'll at least not have any wear issues related to poor lubrication, short of some kind of lube system failure.
The short of it is that you want an oil with at least 1000 PPM of zinc for a flat tappet engine. I wold recommend Mobil One 0W-40 full synthetic.
10W40 is a plant based oil. It contains lots of polymers to make it act like 40W when hot and 10W when cold. These polymers shear out of their weight specs rather quickly. So after a while what you got is straight 10W oil. Conventional oil flows much worse at cold start than synthetic oil.
Synthetic provides better flow at cold start where 80% of engine wear occurs. It is also a 40W base that has additives to make it act like 0W when cold. So at 2000, 3000 etc. miles you still have a good base oil doing it's job.
All the Napa filters are made by Wix. Good filters. The Fram extra guard, extreme guard etc. are finer and finer filtering media. This is good as long as there is no bypassing of the filter.
Problem is, is that there is bypassing of the filter. More so when you restrict the flow even more with a finer filter media. So you are not filtering your oil when the filter is being bypassed, such as at cold start and high RPMs.
When that bypass starts is dependent of the restriction to flow through the filter and the differential pressure across the filter.
Finer media = more restriction to flow = earlier bypassing of the filter.
Use good oil and good filters and you'll at least not have any wear issues related to poor lubrication, short of some kind of lube system failure.
09-25-2015, 11:17 AM
#13
Burning Brakes
there are a couple sizes of filters for the SB, tall and short. I have never used a short one in my life, always use the tall. same price, more filter, more oil, no brainer. I don't recall for sure, but I think there was an even taller one for either marine, diesel, or some other application we could substitute as well but I haven't seen one on the shelf for a dozen years...(ok I see someone else posted about the 2 qt. filter too)
same story with Ford's btw...and Chrysler too. if it fits, we always put the bigger ones on.
same story with Ford's btw...and Chrysler too. if it fits, we always put the bigger ones on.
09-25-2015, 12:59 PM
#15
Team Owner
Thread Starter
Do a search for engine oil. You'll find many of threads with many opinions on the subject.
The short of it is that you want an oil with at least 1000 PPM of zinc for a flat tappet engine. I wold recommend Mobil One 0W-40 full synthetic.
10W40 is a plant based oil. It contains lots of polymers to make it act like 40W when hot and 10W when cold. These polymers shear out of their weight specs rather quickly. So after a while what you got is straight 10W oil. Conventional oil flows much worse at cold start than synthetic oil.
Synthetic provides better flow at cold start where 80% of engine wear occurs. It is also a 40W base that has additives to make it act like 0W when cold. So at 2000, 3000 etc. miles you still have a good base oil doing it's job.
All the Napa filters are made by Wix. Good filters. The Fram extra guard, extreme guard etc. are finer and finer filtering media. This is good as long as there is no bypassing of the filter.
Problem is, is that there is bypassing of the filter. More so when you restrict the flow even more with a finer filter media. So you are not filtering your oil when the filter is being bypassed, such as at cold start and high RPMs.
When that bypass starts is dependent of the restriction to flow through the filter and the differential pressure across the filter.
Finer media = more restriction to flow = earlier bypassing of the filter.
Use good oil and good filters and you'll at least not have any wear issues related to poor lubrication, short of some kind of lube system failure.
The short of it is that you want an oil with at least 1000 PPM of zinc for a flat tappet engine. I wold recommend Mobil One 0W-40 full synthetic.
10W40 is a plant based oil. It contains lots of polymers to make it act like 40W when hot and 10W when cold. These polymers shear out of their weight specs rather quickly. So after a while what you got is straight 10W oil. Conventional oil flows much worse at cold start than synthetic oil.
Synthetic provides better flow at cold start where 80% of engine wear occurs. It is also a 40W base that has additives to make it act like 0W when cold. So at 2000, 3000 etc. miles you still have a good base oil doing it's job.
All the Napa filters are made by Wix. Good filters. The Fram extra guard, extreme guard etc. are finer and finer filtering media. This is good as long as there is no bypassing of the filter.
Problem is, is that there is bypassing of the filter. More so when you restrict the flow even more with a finer filter media. So you are not filtering your oil when the filter is being bypassed, such as at cold start and high RPMs.
When that bypass starts is dependent of the restriction to flow through the filter and the differential pressure across the filter.
Finer media = more restriction to flow = earlier bypassing of the filter.
Use good oil and good filters and you'll at least not have any wear issues related to poor lubrication, short of some kind of lube system failure.