My 1976 280Z 4-speed has 165K actual miles on the bottom end of its original 2.8 liter EFI inline 6 motor. The motor pulls 18 1/2 inches of vacuum at a hot 900 rpm idle. The cylinder head was redone about 10k miles ago. It's a bit cold blooded on a cold morning. But otherwise runs well, pulls STRONG and gets decent gas milage--depending how its driven.
Here's the deal. I drive it pretty hard. She uses about a quart of oil every 1000 miles. I DO NOT want to rebuild the bottom end. The oil control rings in these motors are known to be of low tension by design. The bores generally show VERY little wear---even with milage in excess of 2 or 300,000. The RINGS wear, NOT the bores.
Soooo---what SYNTHETIC oil could you suggest that might reduce consumption somewhat. I'm currently running Mobil 1 synthetic 10W-40. I don't mind spending extra money on "boutique oils". I have a Redline dealer within 12 miles of my home. Keep in mind that the valvetrain is solid, so it likes higher ZDDP levels. I live in South Florida where temps range from 35 degrees on an UNUSUAL (like 2 weeks ago!) January morning to 98 degrees in the afternoon in July. Water temps in this car never exceed 195 degrees. She has NO OVERDRIVE---highway RPMs are between 3500-4000.
Here's the deal. I drive it pretty hard. She uses about a quart of oil every 1000 miles. I DO NOT want to rebuild the bottom end. The oil control rings in these motors are known to be of low tension by design. The bores generally show VERY little wear---even with milage in excess of 2 or 300,000. The RINGS wear, NOT the bores.
Soooo---what SYNTHETIC oil could you suggest that might reduce consumption somewhat. I'm currently running Mobil 1 synthetic 10W-40. I don't mind spending extra money on "boutique oils". I have a Redline dealer within 12 miles of my home. Keep in mind that the valvetrain is solid, so it likes higher ZDDP levels. I live in South Florida where temps range from 35 degrees on an UNUSUAL (like 2 weeks ago!) January morning to 98 degrees in the afternoon in July. Water temps in this car never exceed 195 degrees. She has NO OVERDRIVE---highway RPMs are between 3500-4000.
