Fram XG5 502 MAG MPI & 20W50
10-02-2016, 06:28 PM
#1
Fram XG5 502 MAG MPI & 20W50
Picking up some oil and a filter for my 502 MAG MPI and my oil of choice was on sale, Castrol GTX 20W50.
Also on sale, was the FRAM XG5 oil filter, so I grabbed one not thinking much about it, as it was on sale..
Read some favorable reviews about the filter, aside from being a otherwise crappy FRAM, it had great reports.
All over the box it has mention of synthetic oil usage, that it will extend mileage protection with synthetic. who cares... but does it need to be paired with synthetic oil? I would think not, but thought I would post the question here.
Thoughts on using this filter with the 502 MAG MPI?
Also on sale, was the FRAM XG5 oil filter, so I grabbed one not thinking much about it, as it was on sale..
Read some favorable reviews about the filter, aside from being a otherwise crappy FRAM, it had great reports.
All over the box it has mention of synthetic oil usage, that it will extend mileage protection with synthetic. who cares... but does it need to be paired with synthetic oil? I would think not, but thought I would post the question here.
Thoughts on using this filter with the 502 MAG MPI?
10-02-2016, 08:08 PM
#2
Registered
iTrader: (1)
You'll also need to use synthetic shifter fluid too. SF5.21 to be more specific.
10-02-2016, 08:27 PM
#4
Registered
XG filters are the only Fram that did any good in this truck test, and a 502 is basically a truck motor, eh!
http://www.gmtruckcentral.com/articl...gradesheet.htm
http://www.gmtruckcentral.com/articl...gradesheet.htm
Last edited by Speedracer29; 10-02-2016 at 08:30 PM.
10-03-2016, 03:13 PM
#6
Registered
My pair of 97’ 502mpi mags untouched have a tad over a 1000 hours each and run great with no issues. They have only used Mercury oil filters and the mercury Hi-Efficiency oil filters. The oil has been the Merc 25w-40 synthetic blend and for the last 4 years or so been using the 25w-50 racing 4 stroke merc oil.
10-05-2016, 08:20 AM
#7
what is your choice?
Don't want to turn this into an oil thread..
The local marine guru we use swears by the GTX 20W50.. I was a Merc Oil user forever, and just about to make the switch to the GTX with his recommendation and track record with the rest of our groups motors.
Don't want to turn this into an oil thread..
The local marine guru we use swears by the GTX 20W50.. I was a Merc Oil user forever, and just about to make the switch to the GTX with his recommendation and track record with the rest of our groups motors.
10-06-2016, 12:02 AM
#8
Charter Member # 55
Charter Member
Mobil 1 15w-50 and Mobil 1 M1-302 filter. 5 qt jugs at Walmart for $25
I have 502mpi's also and have been using M1 for 400+ hrs in them.
Ran it in my 525SC for 300+ hrs
I have 502mpi's also and have been using M1 for 400+ hrs in them.
Ran it in my 525SC for 300+ hrs
10-07-2016, 11:50 AM
#10
Registered
Its all about zinc, see if it is full of zinc, then it is fine, esp if you 502 is a 1995 or older(tappets). Mobil 15-50 is not any longer, used to be great..
