Question 1:
Other than non-synthetic, what are the current recommendations for ancient performance cars?
Question 2:
What are HDEO and PCMO, and how would someone standing at the oil shelf an the autostore be able to tell? (see below from the light diesel forum).
Background:
Before I bought my supercharged 63 Avanti, I read that modern diesel multi-grade non-synthetic. oil CG-4 or higher is ideal for older engines. Upon purchase, I had all the filters/fluids replaced and immediately noticed that the engine ran smoother with less (though still visible) smooking on hard acceleration. The oil is Delvac 1400 (15w-40, CI-4). Not certain, but looking in the oil fill hole, the top looks shinier. I will put a few more miles and then around 3000 miles, replace to capture any stuff now in suspension.
Other than non-synthetic, what are the current recommendations for ancient performance cars?
Question 2:
What are HDEO and PCMO, and how would someone standing at the oil shelf an the autostore be able to tell? (see below from the light diesel forum).
Background:
Before I bought my supercharged 63 Avanti, I read that modern diesel multi-grade non-synthetic. oil CG-4 or higher is ideal for older engines. Upon purchase, I had all the filters/fluids replaced and immediately noticed that the engine ran smoother with less (though still visible) smooking on hard acceleration. The oil is Delvac 1400 (15w-40, CI-4). Not certain, but looking in the oil fill hole, the top looks shinier. I will put a few more miles and then around 3000 miles, replace to capture any stuff now in suspension.
quote:
Originally posted by miraCRD:
Good info chucky2....I was not aware of the lighter vis HDEO's.
Also, in the November 1999 issue of "Car and Driver", Patrick Bedard's monthly editorial column was titled "Searching For The Right Oil for Keeper Cars", and featured a discussion with a former Exxon Labs engineer named Ed Kollin. It's a great article and Kollin specifically says that the add pack in the HDEO's are more beneficial to older cars than the modern PCMO's. He cites that in older cars that do a lot of sitting, internal engine corrosion is more of an issue than regular wear, and HDEO's deal with corrosion better.
If you have access to back issues of Car and Driver, I highly recommend digging this one out. I tried the C&D website, but their editorial online archives look like they start at year 2000.