Saturday, February 16
8:00am to 4:00pm
SAACAC Early Bird Swap Meet
Lethbridge Exhibition Park
3401- Parkside Drive South
World of Wheels
20 Roundup Way, S.E.
Friday February 22 - 3:00pm to 9:00pm
Saturday, February 23 - 10:00am to 9:00pm
Sunday February 24 - 10:00am to 6:00pm
Saturday, April 20
9:00am - 5:00pm
SAAC Swap Meet
Thunderbird Club of Southern Ontario Technical Day
Location: TBA near Hamilton, Ontario
Saturday, June 1
Chipman Car Club Swap Meet
Time and Location TBA
API CI-4, CI-4 Plus, CJ-4 oils have a ZDDP level of 1100 parts per million per liter. In a modern diesel engine there is a substantial exhaust soot contamination that the oil must contend with. Diesel oil is designed with much higher levels of detergents and dispersants to fight the soot contamination.
Like ZDDP anti-wear chemistry, detergents are a surface active chemistry and compete directly for space on metal surfaces, such as cam lobe and lifter face. So, in practice, the effective level of Zinc anti-wear is a bit lower than what we expect it to be based solely on chemical analysis.
The ZDDP that is generally used in diesel formulas is primary ZDDP (which activates at higher temperatures) since a diesel engine runs predominantly at operating temperatures. Diesels operate at essentially the same rpm all day long and need polymers that are shear stable to protect bearings.