- Joined
- Aug 10, 2024
- Messages
- 8
I’ve decided to start doing maintenance program where I take an oil sample every 4k miles on the oil before I ultimately change it to determine the actual proper OCI. Amsoil 5w50 SS, Amsoil 20 micron filter, supposedly good for 25k miles or 1 year per Amsoil.
Baseline information: Sample is taken through the dipstick tube with a pump. One autocross session during this sample period, otherwise just daily driving and then weekend fun. Over all I’d say I’m a spirited driver, but I let it get up to at least 165 on oil temp gauge before I lean on it. 16 mile work commute each way in the city, but with traffic that can take 45 minutes. Oil temp gets up to ~190-195 without issue after ~20 minutes driving, city or highway. It won’t go higher than that without really pushing it (like at autocross), where the gauge will break 210 easy. KN filter, conservative professional tune based on street testing, stock engine and turbo components. Oil temp gauge is inferred on this car, however.
Events this sample period: Slave cylinder died recently, cooking the clutch and dual mass flywheel. May have been an ongoing issue, as I was fighting a rumble at idle with an intermittent misfire code through half of this sample period, during which I reverted to the stock tune. In retrospect that was probably the flywheel failing, causing the rumble at idle and phantom misfire. All components were replaced and the rumble/misfire codes are gone.
Thoughts: A little surprised at the viscosity loss and fuel dilution, along with the boron depletion. But it is 2.3 DI turbo, and I do a lot of city driving. Curious what you think about their take on the report— they do not seem concerned about the dilution or low TBN. Multiple autocross sessions coming up during the next 4k mile period. Was planning a track session later this summer, but I’ll wait for the next report first.
Baseline information: Sample is taken through the dipstick tube with a pump. One autocross session during this sample period, otherwise just daily driving and then weekend fun. Over all I’d say I’m a spirited driver, but I let it get up to at least 165 on oil temp gauge before I lean on it. 16 mile work commute each way in the city, but with traffic that can take 45 minutes. Oil temp gets up to ~190-195 without issue after ~20 minutes driving, city or highway. It won’t go higher than that without really pushing it (like at autocross), where the gauge will break 210 easy. KN filter, conservative professional tune based on street testing, stock engine and turbo components. Oil temp gauge is inferred on this car, however.
Events this sample period: Slave cylinder died recently, cooking the clutch and dual mass flywheel. May have been an ongoing issue, as I was fighting a rumble at idle with an intermittent misfire code through half of this sample period, during which I reverted to the stock tune. In retrospect that was probably the flywheel failing, causing the rumble at idle and phantom misfire. All components were replaced and the rumble/misfire codes are gone.
Thoughts: A little surprised at the viscosity loss and fuel dilution, along with the boron depletion. But it is 2.3 DI turbo, and I do a lot of city driving. Curious what you think about their take on the report— they do not seem concerned about the dilution or low TBN. Multiple autocross sessions coming up during the next 4k mile period. Was planning a track session later this summer, but I’ll wait for the next report first.
Last edited by a moderator: