- Aug 2, 2018
- South Carolina
So my 75 LTD is coming up for a oil change, and was wondering what yall would suggest. Completely stock engine with 40k original miles. I know the inherent problems of these engines and from what I read they favor thicker oil. Right now I have hdeo 10w30 duragard ck4. Around 1200 zink 1100 phosphorous according to there spec sheet. I plan on installing a oil and temp guage. All dummy lights now which did come on at a drive through once but temp and oil combined to just one engine light. I believe it was temp related cause I had a Windsor thermostat in a Cleveland block. There is a difference. So what yall got?