Oil analysis for 92 LT5.

[Fulton 1]

This is the Blackstone Labs report for my 92 ZR1. It has ~38,000 miles on the LT5 and I've been running Redline 10W40. The car isn't driven very much and when it is its generally on short trips (most of which involve 7000rpms

). I've been changing the oil about once a year, but since it does see lots of cold starts, etc., I analyze the oil every couple of years.

The following report is for Redline 10W40, 750miles, 12 months on oil, 38,000 miles on engine:

Aluminum 5
Chromium 0
Iron 4
Copper 13
Lead 13
Tin 0
Molybdenum 480
Nickel 1
Manganese 0
Silver 0
Titanium 0
Vanadium 0
Boron 17
Silicon 12
Sodium 11
Calcium 2046
Magnesium 73
Phosphorus 1060
Zinc 1116
Barium 0

SUS viscosity @ 210F = 72.3
Flashpoint = 425F
Fuel = Antifreeze = 0.0%
Water = 0.0%
Insolubles = trace

 

[Patman]

I didn't know you had a ZR-1? Cool! Good numbers too, especially for a car that's driven so hard!