Quote:
Originally Posted by Stephen Edwin
Thank you for that helpful post.
See my previous post!
There are some words that permit [semi] synthetic if they meet certain standards. You appear to interpret those words as specification, designed for, mandatory.
.
|
The words in my Volvo handbook are "Synthetic/semisynthetic oils may be used as long as they meet the above standards" or very similar, the specs are given above that on the page.
That doesn't necessarily exclude mineral or fully synthetic but experience has demosntrated that semisynthetic is the most widely available at present and was just appearing in the early 80s with almost every car being filled with semi from the factories (regarless of make/location etc) from the late 80s.
The molecules in mineral are larger, synthetic smallest, semisynthetic somewhere in the middle so if oil burning/use is a problem the mineral or semi in preference to full synthetic would be advisable.
Likewise with the grade, 10W40 semi is a very good place to start though!