From a '58 Porsche Magazine
#1
02-21-2012, 06:22 PM
From a '58 Porsche Magazine
Notes on Oil Temp from from 1958 Christophorus Magazine
"The oils of well known firms...are so far advanced today that even at a temperature up to 320 the oil film in the bores does not break down and you can still consider the lubricating ability to be sufficient... The maximum oil temperature that our motors can be expected to sustain without serious damage is 280...Only since July 1957, have Porsche motors done away with the camshaft drive gears of plastic. Now they are made of light metal. The plastic wheels are somewhat more susceptible to temperature than the light metal ones and when you drive a long period between 250 and 280 degrees the life span of the plastic cogs sinks and you must not be surprised if one gives out some day...The performance of a motor decreases at such high temperatures. An engine usually reaches its horsepower maximum at 175-195. At a greater motor heat the filling degree is lessened-warm air needs more room and that decreases the performance."
[Thanks to John Wilhoit for bringing this to my attention.]
"The oils of well known firms...are so far advanced today that even at a temperature up to 320 the oil film in the bores does not break down and you can still consider the lubricating ability to be sufficient... The maximum oil temperature that our motors can be expected to sustain without serious damage is 280...Only since July 1957, have Porsche motors done away with the camshaft drive gears of plastic. Now they are made of light metal. The plastic wheels are somewhat more susceptible to temperature than the light metal ones and when you drive a long period between 250 and 280 degrees the life span of the plastic cogs sinks and you must not be surprised if one gives out some day...The performance of a motor decreases at such high temperatures. An engine usually reaches its horsepower maximum at 175-195. At a greater motor heat the filling degree is lessened-warm air needs more room and that decreases the performance."
[Thanks to John Wilhoit for bringing this to my attention.]
#2
02-21-2012, 07:25 PM
Seasoned HDF Member
Join Date: Dec 2004
Location: Texas! Ya mean there's someplace else?
Posts: 11,065
Received 1,296 Likes
on
483 Posts
Gotta love it! Somewhere around here I have a small pocket notebook of my Dad's from 1950. He was a mechanic at the local Chev dealership. It's filled with details about ring jobs, complete top end jobs, etc. Most were done around 40,000 - 60,000 miles, with some as low as 25,000. The notebook itself was handed out by Kendall Motor Oil, with the brag of "Kendall, the 2,000 mile oil".
Thread
Thread Starter
Forum
Replies
Last Post
