El Capitan
Well-Known Member
- Jul 9, 2014
- 3,829
- Boat Info
- 1970 SRV 180 w 2.5L Mercruiser.
2000 Ford Expedition Eddie Bauer
- Engines
- 120HP Mercruiser
I'm reading more about flat tappet motors and I know my 1970 2.5 mercruiser has to be due to its age. Getting ready to do my seasonal oil(s) change and I normally buy mercruiser oil online but not sure about the whole high zinc zddp better for old engines question.
Anyone using this high zinc Rotella?
Thanks,
Anyone using this high zinc Rotella?
Thanks,