07-01-2009, 10:21 PM
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#11 (permalink)
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A True Z Fanatic
Join Date: Mar 2009
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Quote:
Originally Posted by antennahead
No flame back at ya, but most concerned with the hi temps are less worried about hitting limp mode, but are concerned with extended time periods of 260 to 280 degree operation. To say "no one has experienced overheating issues" is to say overheating doesn't occur until limp mode and 300 degrees. There hasn't been a definitive answer from Nissan, nor another expert that I know of, as to whether running at these temps (260 to 280) for a long time period will contribute to shorter engine life.
John
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But, to reinforce your point, we do have charts and information from years of experience with engine oil in general. Those charts and information say higher temps = lower viscosity = less protection, and also higher temps = quicker breakdown of your oil = shorter oil change intervals. By that kind of thinking, 260 is certainly a temp to be concerned about if it's happening regularly and/or for extended periods.
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